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[GearCM][i9500][5.1.x] Optimized CyanogenMod 12.1 for Samsung Galaxy S4 [20160220]

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Alberto96

Recognized Developer
Feb 24, 2010
8,291
17,328
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Modugno (BA)
Samsung Galaxy S4
LeEco Le 2
Use this thread =>http://goo.gl/UFbbzO for questions or discussions.

Only Bug Reports & Feedbacks are allowed here. Penalty: Post Removal by Moderators

wwn7SVv.png

CyanogenMod is a free, community built, aftermarket firmware distribution of Android 5.1.x (Lollipop), which is designed to increase performance and reliability over stock Android for your device.
Code:
#include 
/*
 * Your warranty is now void.
 *
 * I am not responsible for bricked devices, dead SD cards,
 * thermonuclear war, or you getting fired because the alarm app failed. Please
 * do some research if you have any concerns about features included in this ROM
 * before flashing it! YOU are choosing to make these modifications, and if
 * you point the finger at me for messing up your device, I will laugh at you.
 */

CyanogenMod is based on the Android Open Source Project with extra contributions from many people within the Android community. It can be used without any need to have any Google application installed. Linked below is a package that has come from another Android project that restore the Google parts. CyanogenMod does still include various hardware-specific code, which is also slowly being open-sourced anyway.

All the source code for CyanogenMod is available in the CyanogenMod Github repo. And if you would like to contribute to CyanogenMod, please visit out Gerrit Code Review. You can also view the Changelog for a full list of changes & features.

ROM Downloads

All not-working RenderServer hosted files can be found here: https://androidfilehost.com/user/?w=settings-dev-files&flid=50874

<< Stable >>

20160220 Build: https://www.androidfilehost.com/?fid=24421527759883766

<< Misc. (Recovery/Modem/Bootloader) >>

GearRecovery 20160220 (Flashable ZIP): https://www.androidfilehost.com/?fid=24421527759883765 <= Required for Official GearCM Support

GearRecovery 20160220 (Odin Package): https://www.androidfilehost.com/?fid=24421527759885452 <= Use if you are not able to flash the .zip or if you don't have any custom recovery installed on your device

I9500XXUHOG2 LL Modem (Flashable ZIP): https://www.androidfilehost.com/?fid=24421527759883761 <= Latest Modem, Recommended

Partial I9500XXUHOL1 Odin Upgrader (includes OL1 Bootloader & OG2 Modem): https://www.androidfilehost.com/?fid=24421527759885454 <= Recommended if you don't have a recent - XXUHOD4 or newer - LL Bootloader installed on your device

Previous Releases:


I9500XXUHOD4 LL Modem: https://basketbuild.com/filedl/devs...s And Bootloaders/I9500-XXUHOD4-MODEM_CWM.zip

I9500DDUHOA1 LL Modem: http://forum.xda-developers.com/attachment.php?attachmentid=3165311&d=1423927137

GearRecovery (based on TWRP Recovery) 20151003: https://www.androidfilehost.com/?fid=24052804347828835

20151212 Build: https://renderserver.net/downloadre.../cm-12.1-20151212-UNOFFICIAL-GearCM-i9500.zip

20151115 Build: https://renderserver.net/downloadre.../cm-12.1-20151115-UNOFFICIAL-GearCM-i9500.zip

20151101 Build: http://renderserver.net/?dl=c7eba9166b79329a606f842fbf041903

First Start Camera Flashable Fix: http://renderserver.net/?dl=c699f60789a9b312eaaafb19acfb80c5

20151025 Build: http://renderserver.net/?dl=b4293146d62ed2a3b9832859d82d3e9c

Flashable Camcorder Fix: http://renderserver.net/?dl=592b569170ff7e6930e82a2b7d866f8e

20151018 Build: http://renderserver.net/?dl=e6f5b362503e08b0172eacda845812df

20151010 Build: http://renderserver.net/?dl=dd78750053c06f035679edd02ddd7d9a

20151003 Build: https://www.androidfilehost.com/?fid=24052804347828744

GearRecovery (based on TWRP Recovery) 20150920: http://renderserver.net/?dl=5236ed3fae796d580a0edd9d6743e7be

20150928 Build: http://renderserver.net/?dl=6dbdef163a4194ca6e415f6305126742

Mirror 20150928 Build: https://www.androidfilehost.com/?fid=24052804347824829

MD5 20150928: d1364d8a71c0a9edc59f475ad24f897c

20150922 Build: http://renderserver.net/?dl=dc5a57773746e55cc970f2ebc3cc3774

20150920 Build: http://renderserver.net/?dl=f48e0ce5fcae9df0c1fd5f82f10e0786

GearRecovery (based on TWRP Recovery) 20150906: http://renderserver.net/?dl=76193095a9193874fa2700142b994004

20150916 Build: http://renderserver.net/?dl=1d17eb20eba12c3778b92a4b9beb54fd

20150914 Build: http://renderserver.net/?dl=2293bf0e03ee2316179e25cc74708531

20150910 Build: http://renderserver.net/?dl=cc16c5bac7d63d6c332b6b336efcde7e

20150906 Build: http://renderserver.net/?dl=d3116e4717e01906019c9e8f7429c603.

GearRecovery (based on TWRP Recovery) 20150904: http://renderserver.net/?dl=42252a088a67a168cf6f561d75f2b630

20150904 Build: http://renderserver.net/?dl=f32b9c5d028629154a439f5d6847221a

GearRecovery (based on TWRP Recovery) 20150324: https://www.androidfilehost.com/?fid=95916177934545673

20150901 Build: http://renderserver.net/?dl=0a3357b10c1d87b5cabe35fe02ce692f

WiFi 5GHz Fix 20150901: http://forum.xda-developers.com/attachment.php?attachmentid=3459358&d=1441132769

20150830 Build: http://renderserver.net/?dl=4760be26f033ac4982c04df4a3a38aaa

Mirror 20150830 Build (for users having faulty connections): https://mega.nz/#!fQkE1a4Y!iDxD8-tEXAEvxtdABn9mIvqNufflVp5YX-Us5aooh5o by @NBruderman

20150829 Build: http://renderserver.net/?dl=156bb0aa8be0ab6144d75230279a608c

20150828 Build: http://renderserver.net/?dl=527b4ddb058b7916baf21dae4c946570

20150827 Build: http://renderserver.net/?dl=072592ed0241f3a6f3aff98448b968a9

Mobile Data Fix for 20150827: http://forum.xda-developers.com/attachment.php?attachmentid=3453804&d=1440705811

20150820 Build: https://www.androidfilehost.com/?fid=24052804347797675

20150819 Build: https://www.androidfilehost.com/?fid=24052804347797242

20150816 Build: https://www.androidfilehost.com/?fid=24052804347795002

20150815 Build: https://www.androidfilehost.com/?fid=24052804347794267

20150811 Build: https://www.androidfilehost.com/?fid=24052804347791918

20150810 Build: https://www.androidfilehost.com/?fid=24052804347791265

20150731 Build: https://www.androidfilehost.com/?fid=24052804347784593

20150729 Build: https://www.androidfilehost.com/?fid=24052804347783637

20150727v2 Build: https://www.androidfilehost.com/?fid=24052804347782051

20150727 Build: https://www.androidfilehost.com/?fid=24052804347782020

20150724 Build: https://www.androidfilehost.com/?fid=24052804347780414

20150723 Build: https://www.androidfilehost.com/?fid=24052804347779767

20150715 Build: https://www.androidfilehost.com/?fid=24052804347774657

20150714 Build: https://www.androidfilehost.com/?fid=24052804347774065

20150711 Build: https://www.androidfilehost.com/?fid=24052804347772124

20150709 Build: https://www.androidfilehost.com/?fid=24052804347771113

20150707 Build: https://www.androidfilehost.com/?fid=24052804347770083

I9500XXUHOA7 LL Modem: https://www.androidfilehost.com/?fid=95916177934524926

20150706 Build: https://www.androidfilehost.com/?fid=24052804347769730

20150606 Build: https://www.androidfilehost.com/?fid=23991606952615098

20150517 Build: https://www.androidfilehost.com/?fid=23991606952606089

20150425 Build: https://www.androidfilehost.com/?fid=96042739161893525



Google Apps (add-on)

http://forum.xda-developers.com/android/software/tk-gapps-t3116347 <== Recommended <> Micro/Mini Modular Package. Do not choose Stock

Installation

3-button-combo = "Volume Up/+" + "Home/Center" + "Power/Lock"

- First time flashing GearCM 12.1 to your Galaxy S4 (or coming from TouchWiz/Stock Based ROMs)?
  1. Root your device and install latest GearRecovery
  2. Reboot into Recovery using 3-button-combo
  3. Do a Backup!
  4. WIPE (wipe data/factory reset + wipe cache partition + format /system partition)
  5. Install the ROM from internal/external sdcard
  6. Optionally install Google Addon
  7. Done! You can now reboot the phone to enjoy the rom :)
- Upgrading from Official CM10.2/CM11/CM12 or GearCM 11/12?
  1. Reboot into Recovery using 3-button-combo
  2. Do a Backup!
  3. Install latest GearRecovery
  4. Reboot into new Recovery using 3-button-combo (if needed)
  5. WIPE (wipe data/factory reset + wipe cache partition + format /system partition)
  6. Install the ROM from internal/external sdcard
  7. Optionally install the Google Addon
  8. Done! You can now reboot the phone to enjoy the rom :)
- Upgrading from another build of GearCM 12.1?
  1. Reboot into Recovery using 3-button-combo
  2. Do a Backup!
  3. Install latest GearRecovery
  4. Reboot into new Recovery using 3-button-combo (if needed)
  5. Install the ROM from internal/external sdcard
  6. WIPE Dalvik/ART Cache (wipe cache partition + wipe dalvik cache)
  7. Done! You can now reboot the phone to enjoy the rom :)

Known Issues (regarding latest available Stable build)
Please do not report bugs if it is already listen in the list of known issues
  • Current Audio HAL doesn't properly wake up audio devices from standby, causing issues with some VOIP apps. Check FAQ for Workaround -- WIP | Highest Priority -- #1
  • While in-call (on second call) using headphones/headset, audio could be routed to the Earpiece. Enable/Disable Speaker or Plug Out/In the Audio Jack to fix it. (Probably linked to #1) -- WIP | High Priority --
  • While in-call using earpiece the receiver will hear a little echo effect if volume is set to maximum. Reduce volume to fix it. -- WIP | Medium-High Priority --
  • After each boot Camera won't take pictures on first start. You'll need to close the app and re-open it to get Camera working. -- WIP | Medium Priority --
  • Wireless Display with some TVs (HDCP-dependent ones) could cause issues (AOSP bug related to HDCP. Google doesn't provide a solution) -- Unknown Status | Low Priority --
  • Rarely, when you wake-up the device, the touchscreen could have a noticeable input lag, easily fixable by turning off and on the display. (H/W or S/W bug?) -- Probably won't be fixed | Undefined Priority --

Reporting Bugs

First of all, read this: http://www.chiark.greenend.org.uk/~sgtatham/bugs

You are allowed to report bugs only in this thread. Before reporting a bug, please make sure you are running as stock as possible. This means no custom kernel, no custom framework modification, etc. If you are using any of the above modifications, please flash the rom again to get rid of the modifications before reporting.

REPORT BUGS IN THIS THREAD ONLY

  • Grab a logcat right after the problem has occurred. (Please include at least a few pages of the log, not just the last few lines, unless you know what you're doing.)
  • If it is a random reboot, grab /proc/last_kmsg. (Do not bother getting a logcat unless you can get it just before the reboot. A logcat after a reboot is useless)
  • If the problem disappears after running "setenforce 0" from a root shell, grab /data/misc/audit/audit.log
Remember to provide as much info as possible. The more info you provide, the more likely that the bug will be solved. The following is a useful format to follow. Note: If you can provide the latest night/build that the bug didn't exist, it would greatly help in tracking down what caused it.

Code:
What is your--
Phone model:
Radio (baseband) version:
GearCM version:
GearCM download url:
Google Apps version:

Did you--
wipe data/factory reset:
restore with titanium backup:
reboot after having the issue:

Are you using--
a task killer:
a non-stock kernel:
CMSettings/Performance Settings (other than stock):
other modifications:
Provide any additional information (observations/frequency of problem/last version it worked on/etc) as needed:

Changelog

20160220:
  • Updated CM Sources
  • Fixed WiFi Power Off issue (testing required)
  • Updated proprietaries from latest OL1 release
  • Reduced debug stuff to improve performance
  • Added some little fixes here and there
  • Temp. removed OTA Updates app until i manage to find a better file hosting website
  • RECOVERY: rebased on TWRP 3.0.0.0
  • KERNEL: improved WiFi management

Previous Releases:


20151212:
  • Updated CM Sources
  • Increased Camera Stability (do not expect something 100% Stable)
  • Optimized ART Management
  • Fixed Wi-Fi Channel issues (forced US Country Code that brings almost all channels)
  • Fixed Wi-Fi Performance issues on screen-off (power saving management is now static)
  • seLinux Policies are now almost perfect, only Synapse forces us to use permissive mode (due to neverallow rules)
  • Added some minor fixes here and there
  • SYNAPSE: added Wi-Fi Power Saving management
  • KERNEL: added some updates from Android M

20151115:
  • Updated CM Sources
  • Fixed Camera issue on boot (feedback required)
  • Improved Camera Stability (a lot)
  • Using proper Flashlight implementation (takes more or less 3 seconds to turn on now. Same as on my Nexus 4)
  • Increased microphones volume
  • Improved RIL stability
  • Enhanced ROM Security

20151101:
  • Updated CM Sources
  • Fixed Camcorder mic. routing
  • Improved Audio HAL stability
  • Using proper mic. routing for Voice Recording
  • Updated some proprietaries from OI1 Release
  • Using proper manual network search fix
  • Fixed some RIL (l2_hsic) wakelocks caused by unsupported requests
  • Improved Camera Stability
  • KERNEL: added some updates from upstream
  • KERNEL: improved Wi-Fi Stability

20151025:
  • Updated CM Sources
  • Optimized Microphones Volume (should fix low earpiece volume while in loud env. and reduce echo effect)
  • Applied lots of fixes to Audio HAL (VOIP and Headset bugs are still here)
  • Audio Mixer is now managed as is on Stock ROM (nearly identical)
  • Fixed Performance profile (again), shouldn't cause anymore sudden shutdowns/reboots due to High CPU temp.
  • Improved RIL management
  • KERNEL: properly set maximum readahead

20151018:
  • Updated CM Sources (based on latest android security patches)
  • Reduced in-call echo effect for some users (WIP)
  • KERNEL: fixed random reboots caused by cfg80211 driver
  • ALERT: Battery LED sometimes blinks without any valid reason, please ignore this bug until it gets fixed. (CM Sources related)

20151010:
  • Updated CM Sources (based on latest android security patches)
  • Fixed In-Call Wide/Narrow Band switching (any modem can now be used)
  • Increased Microphones Volume
  • In-Call Echo-Cancellation is now completely working
  • Improved In-Call audio quality
  • Improved Audio Driver management
  • Improved BT A2DP Stability with some devices
  • NOTICE: Wipe OTA Updates app data to get latest build
  • ALERT: Battery LED sometimes blinks without any valid reason, please ignore this bug until it gets fixed. (CM Sources related)

20151003:
  • Updated CM Sources
  • Re-worked In-Call echo cancellation management
  • Improved Sound Card management (BT is now using proper values)
  • Reduced In-Call Headset noise
  • Updated Radio binary to OH7 version
  • Added proper Bluetooth vendor information
  • OTA: this build won't have ota direct link due to broken RenderServer FTP access
  • RECOVERY: GearRecovery 20151003 based on latest changes
  • ALERT: Battery LED sometimes blinks without any valid reason, please ignore this bug until it gets fixed. (CM Sources related)

20150928:
  • Updated CM Sources
  • Added QuickBoot support (not enabled by default, check developer options) - Credits @arter97
  • Fixed Microphone with Headphones (not Headset, Headphones don't have a mic)
  • Enabled proper echo cancellation and noise suppression to Microphone
  • Faster boot and optimization of apps
  • Properly fixed volume buttons to wake up the device
  • Fixed some GPS instabilities for some users
  • WiFi has been stabilized even more
  • Improved Performance and Smoothness here and there
  • Enabled SELinux as Permissive (Enforcing would break Synapse and require too much work to fix many little issues)
  • KERNEL: fixed some instabilities that could cause random reboots for some users
  • KERNEL: improved mmc wakelocks management
  • ALERT: Battery LED sometimes blinks without any valid reason, please ignore this bug until it gets fixed. (CM Sources related)

20150922:
  • Updated CM Sources
  • Fixed Mobile Data (downgraded to KK RIL, still better than previous JB RIL though)
  • ALERT: Battery LED sometimes blinks without any valid reason, please ignore this bug until it gets fixed. (CM Sources related)

20150920:
  • Updated CM Sources
  • Improved compatibility with BT Accessories (such as Headsets, Headphones, Carkits, etc...)
  • Removed Battery LED low power mode (now there's always full brightness)
  • Switched to latest Lollipop RIL (thx @modpunk)
  • Improved compatibility with Chinese modems (workaround is still required)
  • Improved WiFi stability with some networks
  • Enhanced Network (Mobile Data and WiFi) performance
  • Reduced screen-on/screen-off delay to the max
  • Enhanced FileSystems stability (there's now a good compromise between stability and performance)
  • Improved Camera stability (it shouldn't hang anymore after some runs)
  • Properly configured Video Encoding/Decoding values
  • SYNAPSE: removed not working and useless features
  • SYNAPSE: improved start-up time
  • KERNEL: using new WiFi country code table
  • KERNEL: enabled F2FS check support
  • RECOVERY: there are too many changes, i can only say that it is now working PERFECT
  • ALERT: Battery LED sometimes flashes without any valid reason, please ignore this bug until it gets fixed. (CM Sources related)

20150916:
  • Updated CM Sources
  • Removed Advanced Display app (all has been moved to Synapse and native Settings)
  • Improved stability with JPEG stuff ( @dandemonic , please test this build :) )
  • Improved UI Smoothness
  • ALERT: Battery LED sometimes flashes without any valid reason, please ignore this bug until it gets fixed. (CM Sources related)

20150914:
  • Updated CM Sources
  • Switched to BFQ I/O Scheduler
  • Removed some useless stuff here and there
  • Improved compatibility with defective batteries
  • Enabled auto-brightness while in doze mode
  • Reduced maximum users limit
  • KERNEL: added BFQ I/O Scheduler support
  • KERNEL: fixed wifi suspend issues (causing low performance and loss of connections)
  • KERNEL: added some updates
  • ALERT: Battery LED sometimes flashes without any valid reason, please ignore this bug until it gets fixed. (CM Sources related)

20150910:
  • Updated CM Sources
  • SYNAPSE: added screen resolution switch feature
  • KERNEL: some updates here and there
  • ALERT: Battery LED sometimes flashes without any valid reason, please ignore this bug until it gets fixed. (CM Sources related)

20150906:
  • Updated CM Sources
  • Fixed random reboot issues, be sure to wipe "Synapse" app data.
  • GearRecovery 20150906 has been released
  • KERNEL: enabled l2_hsic & Software CRC by default
  • ALERT: Battery LED sometimes flashes without any valid reason, please ignore this bug until it gets fixed. (CM Sources related)

20150904:
  • Updated CM Sources
  • Fixed Wi-Fi 5GHz
  • Fixed all instabilities (MP3, reboots...)
  • Fixed wrong HWUI config.
  • Improved SQL/Database performance
  • Improved GPS signal stability
  • Using proper audio values for some paths
  • Improved Smoothness here and there
  • GearRecovery 20150904 has been released
  • KERNEL: back to XZ compression to fix recovery image size
  • ALERT: Battery LED sometimes flashes without any valid reason, please ignore this bug until it gets fixed. (CM Sources related)

20150901:
  • Updated CM Sources
  • Fixed Wi-Fi instabilities
  • Removed Boot Animation micro-lags
  • Enabled adjustable LEDs brightness
  • Improved Performance on big.LITTLE architecture
  • KERNEL: remove broken CIFS support
  • ALERT: Battery LED sometimes flashes without any valid reason, please ignore this bug until it gets fixed. (CM Sources related)

20150830:
  • Updated CM Sources
  • Fixed Bluetooth SCO Audio
  • Fixed Battery Charging LED
  • Fixed interferences with Google Now Voice Recognition
  • Added support for Chinese modems (you need to manually set a flag, check FAQ)

20150829:
  • Updated CM Sources
  • Disabled broken WiFi EAP support
  • KERNEL: enabled CIFS & NFS support

20150828:
  • Updated CM Sources
  • Increased Video Quality (no more pixelated)
  • There shouldn't be anymore rare problems with MP3 files
  • Increased Stability
  • KERNEL: remove recommended aosp values (fixes mobile data)

20150827:
  • Updated CM Sources
  • Added source-compiled Memory Tracker HAL
  • Disabled legacy DRM stuff (please test any DRM app and let me know if they are still working)
  • Optimized Wi-Fi Configuration (up-to-date with latest Nexus devices)
  • Disabled Home Button while in-call
  • Optimized I/O Performance (on both EXT4 & F2FS)
  • Optimized Battery Modes (Power save doesn't cause crashes anymore and Performance profile doesn't kill anymore your device :p)
  • Using proper Wi-Fi HW Configuration (now each device will use proper config, based on its board)
  • Fixed in-call audio on first call after every boot (using another workaround)
  • Added MPEG1 HW Decoding support
  • Increased Photo Quality
  • Using proper software decoders/encoders for our device
  • Added Direct Download support to OTA Updates
  • Added AAC 5.1 Output support (through HDMI/Dock)
  • Disabled useless Bluetooth client features (we need to act as a server, not as a client)
  • Restored stock in-call animations (less smooth than before, but faster)
  • Enabled "Prevent accidental wake-ups" feature (not by default, due to defective proximity sensors)
  • Enabled proper Wi-Fi EAP support (please test it)
  • Disabled some useless features here and there
  • Enabled preferred install location option
  • Disabled HDCP by default (should fix wireless display issues with some TVs)
  • Enabled some interesting CM hidden features here and there
  • KERNEL: added updates from latest android-3.4 AOSP branch
  • KERNEL: switched to LZO compression for much faster boot process
  • KERNEL: fixed some little issues that could crash the device
  • KERNEL: fixed wrong MTP device naming
  • KERNEL: enabled/disabled features as recommended by AOSP config.

20150820:
  • Updated CM Sources
  • Restored HDMI Audio
  • Removed MP3 HW Decoder
  • KERNEL: improved performance and code optimization

20150819:
  • Updated CM Sources
  • Updated AOSP Sources (5.1.1_r13)
  • Stabler Bluetooth SCO Audio
  • Enabled HW MPEG2/MP3/VP8/WMV Decoders
  • Improved Performance and Stability (even more)
  • KERNEL: fixed EHCI wake-up bug (thx dandemonic for bug report)
  • KERNEL: reduced useless dw_mmc verbosity
  • KERNEL: updated net stuff

20150816:
  • Updated CM Sources
  • Fixed Inverted Colors bug everywhere (Screencast, Wireless Display...)
  • Enhanced VOIP Microphone Volume
  • Improved Performance
  • KERNEL: updated network stuff

20150815:
  • Updated CM Sources
  • TEST: Fixed VOIP apps
  • Stabilized Bluetooth SCO, but not completely
  • Switched back to Open-Source OMX Codecs
  • Fixed, again, manual operator search. (some of the CM Updates broke it)
  • Added GearCM denomination
  • KERNEL: reduced charge current while screen is on
  • KERNEL: decreased maximum CPU temp. (no more 100c using Balanced Battery Mode)
  • KERNEL: fixed USB Mass Storage (testers required)

20150811:
  • Updated CM Sources
  • Enhanced Microphone Volumes
  • Killed l2_hsic modem wakelock
  • Improved Battery Life
  • Allowed Low Latency audio access to third-party apps
  • Improved InCallUI Performance

20150810:
  • Updated CM Sources
  • Enhanced Audio Input/Output values (Speaker, Microphones, Earpiece).
  • Reduced/Fixed Echo in-call
  • mDNIe set to Auto by default
  • Fixed VOIP apps such as Skype (testers required)
  • SYNAPSE: removed CPU/GPU Overclock
  • KERNEL: using whole new kernel, based on latest CM repo plus my optimizations
  • KERNEL: removed CPU/GPU Overclock
  • KERNEL: improved Stability, reduced CPU temperature while on Full Load

20150731:
  • Updated CM Sources
  • Fixed, and now definitely, sound disappearing bug. If you don't believe me anymore, try this build ;)
  • Audio Driver Latency has been optimized, now even better
  • Improved Camera performance

20150729:
  • Updated CM Sources
  • Fixed HDMI audio using MHL adapter
  • Switched to newest LL Camera Proprietaries (instead of old JB ones)
  • Fixed S/W Encoders (no more inverted colors while sharing videos using Social Media apps)
  • Added Low Latency Audio support
  • Improved Audio Driver stability and performance
  • Please take a look at the updated "Known Issues" paragraph.

20150727v2:
  • Updated CM Sources
  • Consider this build as a 20150727v2 build (OTA doesn't accept "v2" typo)
  • Fixed "No SIM Card" bug for some of Synapse app users (tested)

20150727:
  • Updated CM Sources
  • Improved Stability and Performance (random reboots aren't anymore here)
  • Enabled HDMI Audio (untested)
  • Fixed Audio Disappearing issue (tested)

20150724:
  • Updated CM Sources
  • Fixed Bluetooth
  • Fixed USB Mass Storage mode
  • Improved Stability and Performance

20150723:
  • Updated CM Sources
  • Removed Synapse app by default (but support is still there)
  • Improved Stability & Performance
  • Increased Speaker volume
  • Fixed LEDs while on Offline Charging mode
  • Updated proprietaries to latest OF3 Stock ROM
  • SYNAPSE: clean up and add some features such as GPU min frequency
  • KERNEL: Updated sources to latest OF3 Source Package
  • KERNEL: Increased Stability
  • KERNEL: Added FIOPS I/O Scheduler (set by default)

20150715:
  • Updated CM Sources
  • Restored SystemUI (Recents Apps) performance tweak

20150714:
  • IMPORTANT: Full Wipe is recommended (let's say nearly necessary)
  • Updated CM Sources
  • Fixed random -No SIM Card- bug caused by Synapse
  • Fixed root access on first boot
  • Switched to SuperSU (CM's Superuser wasn't working correctly with Synapse)
  • Improved UI and JPEG Performance
  • Improved Bluetooth stability and performance
  • InCallUI doesn't have micro-lags anymore
  • SYNAPSE: Fixed No UCI Support bug
  • SYNAPSE: added Software CRC Toggle (enabled by default)
  • KERNEL: update Wi-Fi Country Codes
  • KERNEL: optimized battery life, stability and performance
  • KERNEL: use latest SaberMod GCC 5.1 Toolchain
  • KERNEL: reduce mmc wakelocks

20150711:
  • Updated CM Sources
  • SYNAPSE: fixed some values (audio, charger)
  • KERNEL: revert some mmc updates to reduce wakelocks
  • KERNEL: optimizations and clean-up here and there

20150709:
  • Updated CM Sources
  • Fixed "no SIM Card" issue
  • KERNEL: revert GPU memory change (fixes Random Reboots)
  • KERNEL: back to Stock Thermal Management (fixes Performance Regression)
  • KERNEL: fixed wrong battery capacity (latest Samsung LL sources have this bug)
  • KERNEL: little ptrace fix

20150707:
  • Updated CM Sources
  • Fixed horrible and distorted speaker sound
  • Added OTA Updates support
  • SYNAPSE: added CPU A7/A15 Control
  • SYNAPSE: added Wolfson Sound Control
  • SYNAPSE: added AMOLED Screen Control
  • KERNEL: updated IKCS driver to Exynos5420 state
  • KERNEL: added A7/A15 CPU Overclock/Underclock
  • KERNEL: added AMOLED Screen Control driver
  • KERNEL: added Wolfson Sound Control driver
  • KERNEL: updated UDP driver

20150706:
  • Updated CM Sources (5.1.1_r6 now)
  • Reduced HAL debug (camera, power, lights...)
  • Fixed Audio disappearing bug (please test, our audio platform is so strange that could have different behaviour on each device)
  • Improved Camera stability
  • Increased main mic volume a bit
  • Added Synapse Kernel Control support (with many many many features ;) )
  • Updated RIL to latest JB 4.3 release (NB1, KK and newer libs aren't compatible yet)
  • Added some missing proprietary libraries (such as memtrack)
  • KERNEL: update to Linux Kernel 3.4.108
  • KERNEL: fixed thermal management (no more crashes and less heat production) <= this means reduced overheating
  • KERNEL: improved compatibility with slow microsd cards
  • KERNEL: improved performance and reduced battery usage
  • KERNEL: removed NTFS driver (support is still here, but as a module that needs to be manually loaded)
  • KERNEL: increased GPU shared memory (reducing available RAM to the userspace)
  • KERNEL: disabled unused and useless features

20150606:
  • Updated CM Sources
  • Introduced new Doze Service with Gestures support (Ambient Display)
  • Enabled Call Recording (only for countries where this is allowed)
  • Enhanced Modem Stability
  • Using new Speaker/Mic volumes (by @NBruderman )
  • Introduced HFR Support (720p60 Video Recording, but still not enabled)
  • Fixed Touchscreen Random delay after wake-up
  • Enhanced Stability and Performance everywhere
  • KERNEL: new whole kernel based on latest Linux Kernel 3.4.107 Release
  • KERNEL: improved CPU & GPU & I/O performance
  • KERNEL: enhanced USB connection stability
  • KERNEL: reduced heat production (totally reworked thermal management)
  • KERNEL: using latest available F2FS driver
  • KERNEL: sound card should be detected on all devices ( @MrComputerRevo : you know what i'm talking about ;) )
  • KERNEL: sound will work also on first boot (previous overheating alert wasn't real)
  • KERNEL: improved battery life

20150517:
  • Updated CM Sources
  • KERNEL: enhanced USB stability
  • KERNEL: optimized memcpy performance
  • KERNEL: updated net ipv4/ipv6 stuff
  • KERNEL: optimized cpu performance
  • KERNEL: fixed wrong mtp name
  • KERNEL: many other changes (performance related)

20150425:
  • First Release



The CyanogenMod team would like to thank everyone involved in helping with testing, coding, debugging & documenting! Enjoy!

XDA:DevDB Information
[GearCM][i9500][5.1.x] Optimized CyanogenMod 12.1 for Samsung Galaxy S4, ROM for the Samsung Galaxy S 4

Contributors
Alberto96, NBruderman, intervigil, codeworkx
Source Code: https://github.com/GearCM

ROM OS Version: 5.1.x Lollipop
ROM Kernel: Linux 3.4.x
ROM Firmware Required: Latest LL Bootloader, Custom Recovery required to upgrade to GearRecovery and some basic flashing skills.
Based On: CyanogenMod

Version Information
Status: Stable
Current Stable Version: 20160220
Stable Release Date: 2016-02-20

Created 2015-04-24
Last Updated 2016-02-26
 

Alberto96

Recognized Developer
Feb 24, 2010
8,291
17,328
25
Modugno (BA)
Samsung Galaxy S4
LeEco Le 2
Read carefully.

Important! Read this before any other question/doubt.​

If someone doesn't like my ROMs, or doesn't like me, or even better, doesn't want to like/appreciate my works, then you can just go ahead and use/follow someone else works. Easy, not against XDA rules, and smart.

I'm not here for "fame" (or "glory" as someone in this forum said) unlike someone else, neither this is my job. I'm working on this device just because TW is far than usable (at least for me) on every Samsung device, not because someone else requested me to do it.

Differences between GearCM (Optimized CyanogenMod) and Official CyanogenMod (NIGHTLY):​

Enough of those dumb questions..
The Official CM rom is maintained by @Alberto96 and @intervigil
He makes the very recent changes here relating to performance...which are then in time pushed (even if partially) to CM Official Sources. The kernel is different because it has seLinux disabled and few minor tweaks you might not even notice...this GearCM ROM will have more performance. But CM will have their updated base changes which are included here with each update.
What I mean is you probably wont even notice what's different in terms of user interface. GearCM will have more performance. Official CM will have updated sources. But it will include GearCM's changes in time as @Alberto96 pushes them to CM
You can decide by a simple choice..more performance and not-nightly updated sources or similar/worse performance (improving with nightly updates) with updated sources. I would choose GearCM because of the reasons i mentioned above. Do what you will...and let this be a note to everybody who ask this again and again and again. Don't spam the thread with same question in every alternate page...because there are other people who might have different problems they need to ask. Read at least 15 previous pages and the first post Changelog before asking the question. Reading most of the times will give you a solution and if not most of the info you will read will help you anyway.
 
Last edited:

Alberto96

Recognized Developer
Feb 24, 2010
8,291
17,328
25
Modugno (BA)
Samsung Galaxy S4
LeEco Le 2
Reserved

FAQ (Frequently asked questions)​

If there a procedure that i should follow in order to have a clean base to start from?

Yes, follow this procedure and you shouldn't have any issue.

  1. Flash latest Stock ROM Odin package | http://www.sammobile.com/firmwares/download/55812/I9500XXUHOH7_I9500MBCHOF1_MBC | using latest Odin3 Flasher | http://forum.xda-developers.com/attachment.php?attachmentid=3446301&d=1440131361 | and Standard (not Chinese) .pit file. | http://forum.xda-developers.com/attachment.php?attachmentid=2343320&d=1382462885 |
  2. After First Boot, Shutdown your device and Boot into recovery mode using 3 buttons combo (Volume +, Home, Power)
  3. Wipe Data/Factory Reset using Volume Keys and Power Button (on Stock Recovery)
  4. Flash latest TWRP 2.8.7.0 | https://dl.twrp.me/i9500/twrp-2.8.7.0-i9500.img.tar | using Odin3 | previously linked | (Untick Auto Reboot to avoid any issue)
  5. Shutdown your device (pull off your battery)
  6. Boot into recovery mode using 3 buttons combo | Volume +, Home, Power | (TWRP will boot now)
  7. Flash latest GearRecovery (on TWRP)
  8. Reboot into recovery mode using TWRP on-screen buttons | Home => Reboot => Recovery | (GearRecovery will boot now)
  9. Clean completely your device (Format Data and Wipe All Partitions)
  10. Reboot into recovery mode as did before (GearRecovery will boot again now)
  11. Flash latest GearCM ROM
  12. Home => Reboot => System

Where is "Developer Options" category?
To activate 'Developer Options' category in Settings you need to tap 7 times on 'Build number' located into Settings -> About Phone.


What can i do to fix VOIP audio calls?
There's not a real fix yet, so i found this useful workaround that could help you.

If you need to make a VOIP call:

1) Play something using stock music player (also third-party music players SHOULD be fine)

2) Do not pause audio playback

3) Make a call using your preferred VOIP app.

Or you can just use a Wired Headphone/Headset | BT Headphone/Headset.

This workaround should work also for incoming VOIP calls.


How can i solve problems with Hebrew language?
Go to "Developer Options" in Settings and check "Force RTL layout direction".


What can i do to reduce the "echo effect" while in-call?
Try to reduce in-call earpiece volume (if possible). Shouldn't be required on latest builds.


I'm having problems with battery life, what can i do?

1) Use "Greenify" to hibernate all apps with a "little cloud + 'Gcm' word inside" on the right of each app's name. Donation version is recommended because it allows deeper hibernation of apps

2) Disable "Location" or set it to mode "Battery Saving" (Settings -> Location)

3) Make sure that your 2G/3G mobile network signal level isn't always low or unstable

4) Deny "Wake Up" and "Keep Awake" permissions to Google and third-party apps. (Settings -> Privacy -> Privacy Guard -> Press menu button and check "Show built-in apps" -> Press menu button again and go to Advanced -> Horizontal Scroll to Device)

5) Disable "Sync" or sync only useful stuff like Contacts

6) Disable "Auto-rotate screen" (Settings -> Display & lights -> Rotation)

7) Use one of the latest Modem/Baseband listed on first post.

8) Disable Ambient Display

9) Install Xposed Framework and configure Amplify

If this isn't enough then replace your battery and/or reduce your phone usage. :silly:


Is GearCM OTA supported?
Yes :) (Since 20150707 Build)


Why is my phone over-heating while playing heavy-games or running heavy-apps?
Use a bit your brain to explain why. High CPU and GPU usage = high heat production. Your phone will automatically throttle CPU when needed so don't worry, it is safe and normal.


Can I use another kernel instead of the one included in the zip?
No. Only use the included kernel for 100% compatibility, bug reports with non-standard kernel will be ignored.


Can i disable S-View cover features (lock/unlock)?
Not yet.


*** IR Remote app isn't working anymore/was working on previous builds/causes my phone to crash, what can i do?
Contact *** IR Remote app developer.


Any question about "Can't connect to camera" issue
Do not "stress" camera because we don't use yet a proper implementation. (Exynos limited open-source env.) Just Open & Close Camera apps carefully without force-closing them. (and do not do this frequently)
 
Last edited:

khatkhatik

Senior Member
Oct 10, 2014
183
70
Los Santos!
nice work dude
but I have a request for your Rom
in the touchwiz charging amperage set to 1200mA when screen is on and 1900mA when screen is off
it cause when I use device and it is charging it is not getting very hot and when screen is off charged as fast as possible
but in this ROM charging amperage set to 1900mA all the time and the device getting hot when using it and its charging and its bad for battery
I remember when I9500 released(on android 4.2) had this issue and getting hot when charging that Samsung fixed it
Please change charging amperage like touchwiz
thank u man
 

mohammadpk

Member
Nov 4, 2011
29
1
WiFi-Direct doesn't work,the phone reboots once a invitation is accepted from another device or vise versa.

*I don't have another device to try and give you a relevant logcat

What is your--
Phone model:I9500
Radio (baseband) version:12.1
GearCM version:20150425
GearCM download url:
Google Apps version: gapps-510-base-20150422-2-signed

Did you--
wipe data/factory reset: YES
restore with titanium backup: only apps data for dropbox, foldersync
reboot after having the issue: YES

Are you using--
a task killer: YES - Greenify
a non-stock kernel: Gearcm 3.4.5
CMSettings/Performance Settings (other than stock): NO
other modifications:
Didn't try it on previous versions of cm
 
Last edited:

jadtannous

Senior Member
Mar 27, 2015
299
47
23
Batroun
Im facing heating issue while charging
Device turns off when i capture with flash on (sometimes)
Sent from my GT-I9500 using XDA Free mobile app
 
Last edited:
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  • 105
    Use this thread =>http://goo.gl/UFbbzO for questions or discussions.

    Only Bug Reports & Feedbacks are allowed here. Penalty: Post Removal by Moderators

    wwn7SVv.png

    CyanogenMod is a free, community built, aftermarket firmware distribution of Android 5.1.x (Lollipop), which is designed to increase performance and reliability over stock Android for your device.
    Code:
    #include 
    /*
     * Your warranty is now void.
     *
     * I am not responsible for bricked devices, dead SD cards,
     * thermonuclear war, or you getting fired because the alarm app failed. Please
     * do some research if you have any concerns about features included in this ROM
     * before flashing it! YOU are choosing to make these modifications, and if
     * you point the finger at me for messing up your device, I will laugh at you.
     */

    CyanogenMod is based on the Android Open Source Project with extra contributions from many people within the Android community. It can be used without any need to have any Google application installed. Linked below is a package that has come from another Android project that restore the Google parts. CyanogenMod does still include various hardware-specific code, which is also slowly being open-sourced anyway.

    All the source code for CyanogenMod is available in the CyanogenMod Github repo. And if you would like to contribute to CyanogenMod, please visit out Gerrit Code Review. You can also view the Changelog for a full list of changes & features.

    ROM Downloads

    All not-working RenderServer hosted files can be found here: https://androidfilehost.com/user/?w=settings-dev-files&flid=50874

    << Stable >>

    20160220 Build: https://www.androidfilehost.com/?fid=24421527759883766

    << Misc. (Recovery/Modem/Bootloader) >>

    GearRecovery 20160220 (Flashable ZIP): https://www.androidfilehost.com/?fid=24421527759883765 <= Required for Official GearCM Support

    GearRecovery 20160220 (Odin Package): https://www.androidfilehost.com/?fid=24421527759885452 <= Use if you are not able to flash the .zip or if you don't have any custom recovery installed on your device

    I9500XXUHOG2 LL Modem (Flashable ZIP): https://www.androidfilehost.com/?fid=24421527759883761 <= Latest Modem, Recommended

    Partial I9500XXUHOL1 Odin Upgrader (includes OL1 Bootloader & OG2 Modem): https://www.androidfilehost.com/?fid=24421527759885454 <= Recommended if you don't have a recent - XXUHOD4 or newer - LL Bootloader installed on your device

    Previous Releases:


    I9500XXUHOD4 LL Modem: https://basketbuild.com/filedl/devs...s And Bootloaders/I9500-XXUHOD4-MODEM_CWM.zip

    I9500DDUHOA1 LL Modem: http://forum.xda-developers.com/attachment.php?attachmentid=3165311&d=1423927137

    GearRecovery (based on TWRP Recovery) 20151003: https://www.androidfilehost.com/?fid=24052804347828835

    20151212 Build: https://renderserver.net/downloadre.../cm-12.1-20151212-UNOFFICIAL-GearCM-i9500.zip

    20151115 Build: https://renderserver.net/downloadre.../cm-12.1-20151115-UNOFFICIAL-GearCM-i9500.zip

    20151101 Build: http://renderserver.net/?dl=c7eba9166b79329a606f842fbf041903

    First Start Camera Flashable Fix: http://renderserver.net/?dl=c699f60789a9b312eaaafb19acfb80c5

    20151025 Build: http://renderserver.net/?dl=b4293146d62ed2a3b9832859d82d3e9c

    Flashable Camcorder Fix: http://renderserver.net/?dl=592b569170ff7e6930e82a2b7d866f8e

    20151018 Build: http://renderserver.net/?dl=e6f5b362503e08b0172eacda845812df

    20151010 Build: http://renderserver.net/?dl=dd78750053c06f035679edd02ddd7d9a

    20151003 Build: https://www.androidfilehost.com/?fid=24052804347828744

    GearRecovery (based on TWRP Recovery) 20150920: http://renderserver.net/?dl=5236ed3fae796d580a0edd9d6743e7be

    20150928 Build: http://renderserver.net/?dl=6dbdef163a4194ca6e415f6305126742

    Mirror 20150928 Build: https://www.androidfilehost.com/?fid=24052804347824829

    MD5 20150928: d1364d8a71c0a9edc59f475ad24f897c

    20150922 Build: http://renderserver.net/?dl=dc5a57773746e55cc970f2ebc3cc3774

    20150920 Build: http://renderserver.net/?dl=f48e0ce5fcae9df0c1fd5f82f10e0786

    GearRecovery (based on TWRP Recovery) 20150906: http://renderserver.net/?dl=76193095a9193874fa2700142b994004

    20150916 Build: http://renderserver.net/?dl=1d17eb20eba12c3778b92a4b9beb54fd

    20150914 Build: http://renderserver.net/?dl=2293bf0e03ee2316179e25cc74708531

    20150910 Build: http://renderserver.net/?dl=cc16c5bac7d63d6c332b6b336efcde7e

    20150906 Build: http://renderserver.net/?dl=d3116e4717e01906019c9e8f7429c603.

    GearRecovery (based on TWRP Recovery) 20150904: http://renderserver.net/?dl=42252a088a67a168cf6f561d75f2b630

    20150904 Build: http://renderserver.net/?dl=f32b9c5d028629154a439f5d6847221a

    GearRecovery (based on TWRP Recovery) 20150324: https://www.androidfilehost.com/?fid=95916177934545673

    20150901 Build: http://renderserver.net/?dl=0a3357b10c1d87b5cabe35fe02ce692f

    WiFi 5GHz Fix 20150901: http://forum.xda-developers.com/attachment.php?attachmentid=3459358&d=1441132769

    20150830 Build: http://renderserver.net/?dl=4760be26f033ac4982c04df4a3a38aaa

    Mirror 20150830 Build (for users having faulty connections): https://mega.nz/#!fQkE1a4Y!iDxD8-tEXAEvxtdABn9mIvqNufflVp5YX-Us5aooh5o by @NBruderman

    20150829 Build: http://renderserver.net/?dl=156bb0aa8be0ab6144d75230279a608c

    20150828 Build: http://renderserver.net/?dl=527b4ddb058b7916baf21dae4c946570

    20150827 Build: http://renderserver.net/?dl=072592ed0241f3a6f3aff98448b968a9

    Mobile Data Fix for 20150827: http://forum.xda-developers.com/attachment.php?attachmentid=3453804&d=1440705811

    20150820 Build: https://www.androidfilehost.com/?fid=24052804347797675

    20150819 Build: https://www.androidfilehost.com/?fid=24052804347797242

    20150816 Build: https://www.androidfilehost.com/?fid=24052804347795002

    20150815 Build: https://www.androidfilehost.com/?fid=24052804347794267

    20150811 Build: https://www.androidfilehost.com/?fid=24052804347791918

    20150810 Build: https://www.androidfilehost.com/?fid=24052804347791265

    20150731 Build: https://www.androidfilehost.com/?fid=24052804347784593

    20150729 Build: https://www.androidfilehost.com/?fid=24052804347783637

    20150727v2 Build: https://www.androidfilehost.com/?fid=24052804347782051

    20150727 Build: https://www.androidfilehost.com/?fid=24052804347782020

    20150724 Build: https://www.androidfilehost.com/?fid=24052804347780414

    20150723 Build: https://www.androidfilehost.com/?fid=24052804347779767

    20150715 Build: https://www.androidfilehost.com/?fid=24052804347774657

    20150714 Build: https://www.androidfilehost.com/?fid=24052804347774065

    20150711 Build: https://www.androidfilehost.com/?fid=24052804347772124

    20150709 Build: https://www.androidfilehost.com/?fid=24052804347771113

    20150707 Build: https://www.androidfilehost.com/?fid=24052804347770083

    I9500XXUHOA7 LL Modem: https://www.androidfilehost.com/?fid=95916177934524926

    20150706 Build: https://www.androidfilehost.com/?fid=24052804347769730

    20150606 Build: https://www.androidfilehost.com/?fid=23991606952615098

    20150517 Build: https://www.androidfilehost.com/?fid=23991606952606089

    20150425 Build: https://www.androidfilehost.com/?fid=96042739161893525



    Google Apps (add-on)

    http://forum.xda-developers.com/android/software/tk-gapps-t3116347 <== Recommended <> Micro/Mini Modular Package. Do not choose Stock

    Installation

    3-button-combo = "Volume Up/+" + "Home/Center" + "Power/Lock"

    - First time flashing GearCM 12.1 to your Galaxy S4 (or coming from TouchWiz/Stock Based ROMs)?
    1. Root your device and install latest GearRecovery
    2. Reboot into Recovery using 3-button-combo
    3. Do a Backup!
    4. WIPE (wipe data/factory reset + wipe cache partition + format /system partition)
    5. Install the ROM from internal/external sdcard
    6. Optionally install Google Addon
    7. Done! You can now reboot the phone to enjoy the rom :)
    - Upgrading from Official CM10.2/CM11/CM12 or GearCM 11/12?
    1. Reboot into Recovery using 3-button-combo
    2. Do a Backup!
    3. Install latest GearRecovery
    4. Reboot into new Recovery using 3-button-combo (if needed)
    5. WIPE (wipe data/factory reset + wipe cache partition + format /system partition)
    6. Install the ROM from internal/external sdcard
    7. Optionally install the Google Addon
    8. Done! You can now reboot the phone to enjoy the rom :)
    - Upgrading from another build of GearCM 12.1?
    1. Reboot into Recovery using 3-button-combo
    2. Do a Backup!
    3. Install latest GearRecovery
    4. Reboot into new Recovery using 3-button-combo (if needed)
    5. Install the ROM from internal/external sdcard
    6. WIPE Dalvik/ART Cache (wipe cache partition + wipe dalvik cache)
    7. Done! You can now reboot the phone to enjoy the rom :)

    Known Issues (regarding latest available Stable build)
    Please do not report bugs if it is already listen in the list of known issues
    • Current Audio HAL doesn't properly wake up audio devices from standby, causing issues with some VOIP apps. Check FAQ for Workaround -- WIP | Highest Priority -- #1
    • While in-call (on second call) using headphones/headset, audio could be routed to the Earpiece. Enable/Disable Speaker or Plug Out/In the Audio Jack to fix it. (Probably linked to #1) -- WIP | High Priority --
    • While in-call using earpiece the receiver will hear a little echo effect if volume is set to maximum. Reduce volume to fix it. -- WIP | Medium-High Priority --
    • After each boot Camera won't take pictures on first start. You'll need to close the app and re-open it to get Camera working. -- WIP | Medium Priority --
    • Wireless Display with some TVs (HDCP-dependent ones) could cause issues (AOSP bug related to HDCP. Google doesn't provide a solution) -- Unknown Status | Low Priority --
    • Rarely, when you wake-up the device, the touchscreen could have a noticeable input lag, easily fixable by turning off and on the display. (H/W or S/W bug?) -- Probably won't be fixed | Undefined Priority --

    Reporting Bugs

    First of all, read this: http://www.chiark.greenend.org.uk/~sgtatham/bugs

    You are allowed to report bugs only in this thread. Before reporting a bug, please make sure you are running as stock as possible. This means no custom kernel, no custom framework modification, etc. If you are using any of the above modifications, please flash the rom again to get rid of the modifications before reporting.

    REPORT BUGS IN THIS THREAD ONLY

    • Grab a logcat right after the problem has occurred. (Please include at least a few pages of the log, not just the last few lines, unless you know what you're doing.)
    • If it is a random reboot, grab /proc/last_kmsg. (Do not bother getting a logcat unless you can get it just before the reboot. A logcat after a reboot is useless)
    • If the problem disappears after running "setenforce 0" from a root shell, grab /data/misc/audit/audit.log
    Remember to provide as much info as possible. The more info you provide, the more likely that the bug will be solved. The following is a useful format to follow. Note: If you can provide the latest night/build that the bug didn't exist, it would greatly help in tracking down what caused it.

    Code:
    What is your--
    Phone model:
    Radio (baseband) version:
    GearCM version:
    GearCM download url:
    Google Apps version:
    
    Did you--
    wipe data/factory reset:
    restore with titanium backup:
    reboot after having the issue:
    
    Are you using--
    a task killer:
    a non-stock kernel:
    CMSettings/Performance Settings (other than stock):
    other modifications:
    Provide any additional information (observations/frequency of problem/last version it worked on/etc) as needed:

    Changelog

    20160220:
    • Updated CM Sources
    • Fixed WiFi Power Off issue (testing required)
    • Updated proprietaries from latest OL1 release
    • Reduced debug stuff to improve performance
    • Added some little fixes here and there
    • Temp. removed OTA Updates app until i manage to find a better file hosting website
    • RECOVERY: rebased on TWRP 3.0.0.0
    • KERNEL: improved WiFi management

    Previous Releases:


    20151212:
    • Updated CM Sources
    • Increased Camera Stability (do not expect something 100% Stable)
    • Optimized ART Management
    • Fixed Wi-Fi Channel issues (forced US Country Code that brings almost all channels)
    • Fixed Wi-Fi Performance issues on screen-off (power saving management is now static)
    • seLinux Policies are now almost perfect, only Synapse forces us to use permissive mode (due to neverallow rules)
    • Added some minor fixes here and there
    • SYNAPSE: added Wi-Fi Power Saving management
    • KERNEL: added some updates from Android M

    20151115:
    • Updated CM Sources
    • Fixed Camera issue on boot (feedback required)
    • Improved Camera Stability (a lot)
    • Using proper Flashlight implementation (takes more or less 3 seconds to turn on now. Same as on my Nexus 4)
    • Increased microphones volume
    • Improved RIL stability
    • Enhanced ROM Security

    20151101:
    • Updated CM Sources
    • Fixed Camcorder mic. routing
    • Improved Audio HAL stability
    • Using proper mic. routing for Voice Recording
    • Updated some proprietaries from OI1 Release
    • Using proper manual network search fix
    • Fixed some RIL (l2_hsic) wakelocks caused by unsupported requests
    • Improved Camera Stability
    • KERNEL: added some updates from upstream
    • KERNEL: improved Wi-Fi Stability

    20151025:
    • Updated CM Sources
    • Optimized Microphones Volume (should fix low earpiece volume while in loud env. and reduce echo effect)
    • Applied lots of fixes to Audio HAL (VOIP and Headset bugs are still here)
    • Audio Mixer is now managed as is on Stock ROM (nearly identical)
    • Fixed Performance profile (again), shouldn't cause anymore sudden shutdowns/reboots due to High CPU temp.
    • Improved RIL management
    • KERNEL: properly set maximum readahead

    20151018:
    • Updated CM Sources (based on latest android security patches)
    • Reduced in-call echo effect for some users (WIP)
    • KERNEL: fixed random reboots caused by cfg80211 driver
    • ALERT: Battery LED sometimes blinks without any valid reason, please ignore this bug until it gets fixed. (CM Sources related)

    20151010:
    • Updated CM Sources (based on latest android security patches)
    • Fixed In-Call Wide/Narrow Band switching (any modem can now be used)
    • Increased Microphones Volume
    • In-Call Echo-Cancellation is now completely working
    • Improved In-Call audio quality
    • Improved Audio Driver management
    • Improved BT A2DP Stability with some devices
    • NOTICE: Wipe OTA Updates app data to get latest build
    • ALERT: Battery LED sometimes blinks without any valid reason, please ignore this bug until it gets fixed. (CM Sources related)

    20151003:
    • Updated CM Sources
    • Re-worked In-Call echo cancellation management
    • Improved Sound Card management (BT is now using proper values)
    • Reduced In-Call Headset noise
    • Updated Radio binary to OH7 version
    • Added proper Bluetooth vendor information
    • OTA: this build won't have ota direct link due to broken RenderServer FTP access
    • RECOVERY: GearRecovery 20151003 based on latest changes
    • ALERT: Battery LED sometimes blinks without any valid reason, please ignore this bug until it gets fixed. (CM Sources related)

    20150928:
    • Updated CM Sources
    • Added QuickBoot support (not enabled by default, check developer options) - Credits @arter97
    • Fixed Microphone with Headphones (not Headset, Headphones don't have a mic)
    • Enabled proper echo cancellation and noise suppression to Microphone
    • Faster boot and optimization of apps
    • Properly fixed volume buttons to wake up the device
    • Fixed some GPS instabilities for some users
    • WiFi has been stabilized even more
    • Improved Performance and Smoothness here and there
    • Enabled SELinux as Permissive (Enforcing would break Synapse and require too much work to fix many little issues)
    • KERNEL: fixed some instabilities that could cause random reboots for some users
    • KERNEL: improved mmc wakelocks management
    • ALERT: Battery LED sometimes blinks without any valid reason, please ignore this bug until it gets fixed. (CM Sources related)

    20150922:
    • Updated CM Sources
    • Fixed Mobile Data (downgraded to KK RIL, still better than previous JB RIL though)
    • ALERT: Battery LED sometimes blinks without any valid reason, please ignore this bug until it gets fixed. (CM Sources related)

    20150920:
    • Updated CM Sources
    • Improved compatibility with BT Accessories (such as Headsets, Headphones, Carkits, etc...)
    • Removed Battery LED low power mode (now there's always full brightness)
    • Switched to latest Lollipop RIL (thx @modpunk)
    • Improved compatibility with Chinese modems (workaround is still required)
    • Improved WiFi stability with some networks
    • Enhanced Network (Mobile Data and WiFi) performance
    • Reduced screen-on/screen-off delay to the max
    • Enhanced FileSystems stability (there's now a good compromise between stability and performance)
    • Improved Camera stability (it shouldn't hang anymore after some runs)
    • Properly configured Video Encoding/Decoding values
    • SYNAPSE: removed not working and useless features
    • SYNAPSE: improved start-up time
    • KERNEL: using new WiFi country code table
    • KERNEL: enabled F2FS check support
    • RECOVERY: there are too many changes, i can only say that it is now working PERFECT
    • ALERT: Battery LED sometimes flashes without any valid reason, please ignore this bug until it gets fixed. (CM Sources related)

    20150916:
    • Updated CM Sources
    • Removed Advanced Display app (all has been moved to Synapse and native Settings)
    • Improved stability with JPEG stuff ( @dandemonic , please test this build :) )
    • Improved UI Smoothness
    • ALERT: Battery LED sometimes flashes without any valid reason, please ignore this bug until it gets fixed. (CM Sources related)

    20150914:
    • Updated CM Sources
    • Switched to BFQ I/O Scheduler
    • Removed some useless stuff here and there
    • Improved compatibility with defective batteries
    • Enabled auto-brightness while in doze mode
    • Reduced maximum users limit
    • KERNEL: added BFQ I/O Scheduler support
    • KERNEL: fixed wifi suspend issues (causing low performance and loss of connections)
    • KERNEL: added some updates
    • ALERT: Battery LED sometimes flashes without any valid reason, please ignore this bug until it gets fixed. (CM Sources related)

    20150910:
    • Updated CM Sources
    • SYNAPSE: added screen resolution switch feature
    • KERNEL: some updates here and there
    • ALERT: Battery LED sometimes flashes without any valid reason, please ignore this bug until it gets fixed. (CM Sources related)

    20150906:
    • Updated CM Sources
    • Fixed random reboot issues, be sure to wipe "Synapse" app data.
    • GearRecovery 20150906 has been released
    • KERNEL: enabled l2_hsic & Software CRC by default
    • ALERT: Battery LED sometimes flashes without any valid reason, please ignore this bug until it gets fixed. (CM Sources related)

    20150904:
    • Updated CM Sources
    • Fixed Wi-Fi 5GHz
    • Fixed all instabilities (MP3, reboots...)
    • Fixed wrong HWUI config.
    • Improved SQL/Database performance
    • Improved GPS signal stability
    • Using proper audio values for some paths
    • Improved Smoothness here and there
    • GearRecovery 20150904 has been released
    • KERNEL: back to XZ compression to fix recovery image size
    • ALERT: Battery LED sometimes flashes without any valid reason, please ignore this bug until it gets fixed. (CM Sources related)

    20150901:
    • Updated CM Sources
    • Fixed Wi-Fi instabilities
    • Removed Boot Animation micro-lags
    • Enabled adjustable LEDs brightness
    • Improved Performance on big.LITTLE architecture
    • KERNEL: remove broken CIFS support
    • ALERT: Battery LED sometimes flashes without any valid reason, please ignore this bug until it gets fixed. (CM Sources related)

    20150830:
    • Updated CM Sources
    • Fixed Bluetooth SCO Audio
    • Fixed Battery Charging LED
    • Fixed interferences with Google Now Voice Recognition
    • Added support for Chinese modems (you need to manually set a flag, check FAQ)

    20150829:
    • Updated CM Sources
    • Disabled broken WiFi EAP support
    • KERNEL: enabled CIFS & NFS support

    20150828:
    • Updated CM Sources
    • Increased Video Quality (no more pixelated)
    • There shouldn't be anymore rare problems with MP3 files
    • Increased Stability
    • KERNEL: remove recommended aosp values (fixes mobile data)

    20150827:
    • Updated CM Sources
    • Added source-compiled Memory Tracker HAL
    • Disabled legacy DRM stuff (please test any DRM app and let me know if they are still working)
    • Optimized Wi-Fi Configuration (up-to-date with latest Nexus devices)
    • Disabled Home Button while in-call
    • Optimized I/O Performance (on both EXT4 & F2FS)
    • Optimized Battery Modes (Power save doesn't cause crashes anymore and Performance profile doesn't kill anymore your device :p)
    • Using proper Wi-Fi HW Configuration (now each device will use proper config, based on its board)
    • Fixed in-call audio on first call after every boot (using another workaround)
    • Added MPEG1 HW Decoding support
    • Increased Photo Quality
    • Using proper software decoders/encoders for our device
    • Added Direct Download support to OTA Updates
    • Added AAC 5.1 Output support (through HDMI/Dock)
    • Disabled useless Bluetooth client features (we need to act as a server, not as a client)
    • Restored stock in-call animations (less smooth than before, but faster)
    • Enabled "Prevent accidental wake-ups" feature (not by default, due to defective proximity sensors)
    • Enabled proper Wi-Fi EAP support (please test it)
    • Disabled some useless features here and there
    • Enabled preferred install location option
    • Disabled HDCP by default (should fix wireless display issues with some TVs)
    • Enabled some interesting CM hidden features here and there
    • KERNEL: added updates from latest android-3.4 AOSP branch
    • KERNEL: switched to LZO compression for much faster boot process
    • KERNEL: fixed some little issues that could crash the device
    • KERNEL: fixed wrong MTP device naming
    • KERNEL: enabled/disabled features as recommended by AOSP config.

    20150820:
    • Updated CM Sources
    • Restored HDMI Audio
    • Removed MP3 HW Decoder
    • KERNEL: improved performance and code optimization

    20150819:
    • Updated CM Sources
    • Updated AOSP Sources (5.1.1_r13)
    • Stabler Bluetooth SCO Audio
    • Enabled HW MPEG2/MP3/VP8/WMV Decoders
    • Improved Performance and Stability (even more)
    • KERNEL: fixed EHCI wake-up bug (thx dandemonic for bug report)
    • KERNEL: reduced useless dw_mmc verbosity
    • KERNEL: updated net stuff

    20150816:
    • Updated CM Sources
    • Fixed Inverted Colors bug everywhere (Screencast, Wireless Display...)
    • Enhanced VOIP Microphone Volume
    • Improved Performance
    • KERNEL: updated network stuff

    20150815:
    • Updated CM Sources
    • TEST: Fixed VOIP apps
    • Stabilized Bluetooth SCO, but not completely
    • Switched back to Open-Source OMX Codecs
    • Fixed, again, manual operator search. (some of the CM Updates broke it)
    • Added GearCM denomination
    • KERNEL: reduced charge current while screen is on
    • KERNEL: decreased maximum CPU temp. (no more 100c using Balanced Battery Mode)
    • KERNEL: fixed USB Mass Storage (testers required)

    20150811:
    • Updated CM Sources
    • Enhanced Microphone Volumes
    • Killed l2_hsic modem wakelock
    • Improved Battery Life
    • Allowed Low Latency audio access to third-party apps
    • Improved InCallUI Performance

    20150810:
    • Updated CM Sources
    • Enhanced Audio Input/Output values (Speaker, Microphones, Earpiece).
    • Reduced/Fixed Echo in-call
    • mDNIe set to Auto by default
    • Fixed VOIP apps such as Skype (testers required)
    • SYNAPSE: removed CPU/GPU Overclock
    • KERNEL: using whole new kernel, based on latest CM repo plus my optimizations
    • KERNEL: removed CPU/GPU Overclock
    • KERNEL: improved Stability, reduced CPU temperature while on Full Load

    20150731:
    • Updated CM Sources
    • Fixed, and now definitely, sound disappearing bug. If you don't believe me anymore, try this build ;)
    • Audio Driver Latency has been optimized, now even better
    • Improved Camera performance

    20150729:
    • Updated CM Sources
    • Fixed HDMI audio using MHL adapter
    • Switched to newest LL Camera Proprietaries (instead of old JB ones)
    • Fixed S/W Encoders (no more inverted colors while sharing videos using Social Media apps)
    • Added Low Latency Audio support
    • Improved Audio Driver stability and performance
    • Please take a look at the updated "Known Issues" paragraph.

    20150727v2:
    • Updated CM Sources
    • Consider this build as a 20150727v2 build (OTA doesn't accept "v2" typo)
    • Fixed "No SIM Card" bug for some of Synapse app users (tested)

    20150727:
    • Updated CM Sources
    • Improved Stability and Performance (random reboots aren't anymore here)
    • Enabled HDMI Audio (untested)
    • Fixed Audio Disappearing issue (tested)

    20150724:
    • Updated CM Sources
    • Fixed Bluetooth
    • Fixed USB Mass Storage mode
    • Improved Stability and Performance

    20150723:
    • Updated CM Sources
    • Removed Synapse app by default (but support is still there)
    • Improved Stability & Performance
    • Increased Speaker volume
    • Fixed LEDs while on Offline Charging mode
    • Updated proprietaries to latest OF3 Stock ROM
    • SYNAPSE: clean up and add some features such as GPU min frequency
    • KERNEL: Updated sources to latest OF3 Source Package
    • KERNEL: Increased Stability
    • KERNEL: Added FIOPS I/O Scheduler (set by default)

    20150715:
    • Updated CM Sources
    • Restored SystemUI (Recents Apps) performance tweak

    20150714:
    • IMPORTANT: Full Wipe is recommended (let's say nearly necessary)
    • Updated CM Sources
    • Fixed random -No SIM Card- bug caused by Synapse
    • Fixed root access on first boot
    • Switched to SuperSU (CM's Superuser wasn't working correctly with Synapse)
    • Improved UI and JPEG Performance
    • Improved Bluetooth stability and performance
    • InCallUI doesn't have micro-lags anymore
    • SYNAPSE: Fixed No UCI Support bug
    • SYNAPSE: added Software CRC Toggle (enabled by default)
    • KERNEL: update Wi-Fi Country Codes
    • KERNEL: optimized battery life, stability and performance
    • KERNEL: use latest SaberMod GCC 5.1 Toolchain
    • KERNEL: reduce mmc wakelocks

    20150711:
    • Updated CM Sources
    • SYNAPSE: fixed some values (audio, charger)
    • KERNEL: revert some mmc updates to reduce wakelocks
    • KERNEL: optimizations and clean-up here and there

    20150709:
    • Updated CM Sources
    • Fixed "no SIM Card" issue
    • KERNEL: revert GPU memory change (fixes Random Reboots)
    • KERNEL: back to Stock Thermal Management (fixes Performance Regression)
    • KERNEL: fixed wrong battery capacity (latest Samsung LL sources have this bug)
    • KERNEL: little ptrace fix

    20150707:
    • Updated CM Sources
    • Fixed horrible and distorted speaker sound
    • Added OTA Updates support
    • SYNAPSE: added CPU A7/A15 Control
    • SYNAPSE: added Wolfson Sound Control
    • SYNAPSE: added AMOLED Screen Control
    • KERNEL: updated IKCS driver to Exynos5420 state
    • KERNEL: added A7/A15 CPU Overclock/Underclock
    • KERNEL: added AMOLED Screen Control driver
    • KERNEL: added Wolfson Sound Control driver
    • KERNEL: updated UDP driver

    20150706:
    • Updated CM Sources (5.1.1_r6 now)
    • Reduced HAL debug (camera, power, lights...)
    • Fixed Audio disappearing bug (please test, our audio platform is so strange that could have different behaviour on each device)
    • Improved Camera stability
    • Increased main mic volume a bit
    • Added Synapse Kernel Control support (with many many many features ;) )
    • Updated RIL to latest JB 4.3 release (NB1, KK and newer libs aren't compatible yet)
    • Added some missing proprietary libraries (such as memtrack)
    • KERNEL: update to Linux Kernel 3.4.108
    • KERNEL: fixed thermal management (no more crashes and less heat production) <= this means reduced overheating
    • KERNEL: improved compatibility with slow microsd cards
    • KERNEL: improved performance and reduced battery usage
    • KERNEL: removed NTFS driver (support is still here, but as a module that needs to be manually loaded)
    • KERNEL: increased GPU shared memory (reducing available RAM to the userspace)
    • KERNEL: disabled unused and useless features

    20150606:
    • Updated CM Sources
    • Introduced new Doze Service with Gestures support (Ambient Display)
    • Enabled Call Recording (only for countries where this is allowed)
    • Enhanced Modem Stability
    • Using new Speaker/Mic volumes (by @NBruderman )
    • Introduced HFR Support (720p60 Video Recording, but still not enabled)
    • Fixed Touchscreen Random delay after wake-up
    • Enhanced Stability and Performance everywhere
    • KERNEL: new whole kernel based on latest Linux Kernel 3.4.107 Release
    • KERNEL: improved CPU & GPU & I/O performance
    • KERNEL: enhanced USB connection stability
    • KERNEL: reduced heat production (totally reworked thermal management)
    • KERNEL: using latest available F2FS driver
    • KERNEL: sound card should be detected on all devices ( @MrComputerRevo : you know what i'm talking about ;) )
    • KERNEL: sound will work also on first boot (previous overheating alert wasn't real)
    • KERNEL: improved battery life

    20150517:
    • Updated CM Sources
    • KERNEL: enhanced USB stability
    • KERNEL: optimized memcpy performance
    • KERNEL: updated net ipv4/ipv6 stuff
    • KERNEL: optimized cpu performance
    • KERNEL: fixed wrong mtp name
    • KERNEL: many other changes (performance related)

    20150425:
    • First Release



    The CyanogenMod team would like to thank everyone involved in helping with testing, coding, debugging & documenting! Enjoy!

    XDA:DevDB Information
    [GearCM][i9500][5.1.x] Optimized CyanogenMod 12.1 for Samsung Galaxy S4, ROM for the Samsung Galaxy S 4

    Contributors
    Alberto96, NBruderman, intervigil, codeworkx
    Source Code: https://github.com/GearCM

    ROM OS Version: 5.1.x Lollipop
    ROM Kernel: Linux 3.4.x
    ROM Firmware Required: Latest LL Bootloader, Custom Recovery required to upgrade to GearRecovery and some basic flashing skills.
    Based On: CyanogenMod

    Version Information
    Status: Stable
    Current Stable Version: 20160220
    Stable Release Date: 2016-02-20

    Created 2015-04-24
    Last Updated 2016-02-26
    37
    Read carefully.

    Important! Read this before any other question/doubt.​

    If someone doesn't like my ROMs, or doesn't like me, or even better, doesn't want to like/appreciate my works, then you can just go ahead and use/follow someone else works. Easy, not against XDA rules, and smart.

    I'm not here for "fame" (or "glory" as someone in this forum said) unlike someone else, neither this is my job. I'm working on this device just because TW is far than usable (at least for me) on every Samsung device, not because someone else requested me to do it.

    Differences between GearCM (Optimized CyanogenMod) and Official CyanogenMod (NIGHTLY):​

    Enough of those dumb questions..
    The Official CM rom is maintained by @Alberto96 and @intervigil
    He makes the very recent changes here relating to performance...which are then in time pushed (even if partially) to CM Official Sources. The kernel is different because it has seLinux disabled and few minor tweaks you might not even notice...this GearCM ROM will have more performance. But CM will have their updated base changes which are included here with each update.
    What I mean is you probably wont even notice what's different in terms of user interface. GearCM will have more performance. Official CM will have updated sources. But it will include GearCM's changes in time as @Alberto96 pushes them to CM
    You can decide by a simple choice..more performance and not-nightly updated sources or similar/worse performance (improving with nightly updates) with updated sources. I would choose GearCM because of the reasons i mentioned above. Do what you will...and let this be a note to everybody who ask this again and again and again. Don't spam the thread with same question in every alternate page...because there are other people who might have different problems they need to ask. Read at least 15 previous pages and the first post Changelog before asking the question. Reading most of the times will give you a solution and if not most of the info you will read will help you anyway.
    34
    NEWS: I (thx to gladiac ideas) managed to fix GPU issues with CM13, now it doesn't crash anymore but there's still something that causes the ROM to crash. I'll keep you updated.
    31
    Reserved

    FAQ (Frequently asked questions)​

    If there a procedure that i should follow in order to have a clean base to start from?

    Yes, follow this procedure and you shouldn't have any issue.

    1. Flash latest Stock ROM Odin package | http://www.sammobile.com/firmwares/download/55812/I9500XXUHOH7_I9500MBCHOF1_MBC | using latest Odin3 Flasher | http://forum.xda-developers.com/attachment.php?attachmentid=3446301&d=1440131361 | and Standard (not Chinese) .pit file. | http://forum.xda-developers.com/attachment.php?attachmentid=2343320&d=1382462885 |
    2. After First Boot, Shutdown your device and Boot into recovery mode using 3 buttons combo (Volume +, Home, Power)
    3. Wipe Data/Factory Reset using Volume Keys and Power Button (on Stock Recovery)
    4. Flash latest TWRP 2.8.7.0 | https://dl.twrp.me/i9500/twrp-2.8.7.0-i9500.img.tar | using Odin3 | previously linked | (Untick Auto Reboot to avoid any issue)
    5. Shutdown your device (pull off your battery)
    6. Boot into recovery mode using 3 buttons combo | Volume +, Home, Power | (TWRP will boot now)
    7. Flash latest GearRecovery (on TWRP)
    8. Reboot into recovery mode using TWRP on-screen buttons | Home => Reboot => Recovery | (GearRecovery will boot now)
    9. Clean completely your device (Format Data and Wipe All Partitions)
    10. Reboot into recovery mode as did before (GearRecovery will boot again now)
    11. Flash latest GearCM ROM
    12. Home => Reboot => System

    Where is "Developer Options" category?
    To activate 'Developer Options' category in Settings you need to tap 7 times on 'Build number' located into Settings -> About Phone.


    What can i do to fix VOIP audio calls?
    There's not a real fix yet, so i found this useful workaround that could help you.

    If you need to make a VOIP call:

    1) Play something using stock music player (also third-party music players SHOULD be fine)

    2) Do not pause audio playback

    3) Make a call using your preferred VOIP app.

    Or you can just use a Wired Headphone/Headset | BT Headphone/Headset.

    This workaround should work also for incoming VOIP calls.


    How can i solve problems with Hebrew language?
    Go to "Developer Options" in Settings and check "Force RTL layout direction".


    What can i do to reduce the "echo effect" while in-call?
    Try to reduce in-call earpiece volume (if possible). Shouldn't be required on latest builds.


    I'm having problems with battery life, what can i do?

    1) Use "Greenify" to hibernate all apps with a "little cloud + 'Gcm' word inside" on the right of each app's name. Donation version is recommended because it allows deeper hibernation of apps

    2) Disable "Location" or set it to mode "Battery Saving" (Settings -> Location)

    3) Make sure that your 2G/3G mobile network signal level isn't always low or unstable

    4) Deny "Wake Up" and "Keep Awake" permissions to Google and third-party apps. (Settings -> Privacy -> Privacy Guard -> Press menu button and check "Show built-in apps" -> Press menu button again and go to Advanced -> Horizontal Scroll to Device)

    5) Disable "Sync" or sync only useful stuff like Contacts

    6) Disable "Auto-rotate screen" (Settings -> Display & lights -> Rotation)

    7) Use one of the latest Modem/Baseband listed on first post.

    8) Disable Ambient Display

    9) Install Xposed Framework and configure Amplify

    If this isn't enough then replace your battery and/or reduce your phone usage. :silly:


    Is GearCM OTA supported?
    Yes :) (Since 20150707 Build)


    Why is my phone over-heating while playing heavy-games or running heavy-apps?
    Use a bit your brain to explain why. High CPU and GPU usage = high heat production. Your phone will automatically throttle CPU when needed so don't worry, it is safe and normal.


    Can I use another kernel instead of the one included in the zip?
    No. Only use the included kernel for 100% compatibility, bug reports with non-standard kernel will be ignored.


    Can i disable S-View cover features (lock/unlock)?
    Not yet.


    *** IR Remote app isn't working anymore/was working on previous builds/causes my phone to crash, what can i do?
    Contact *** IR Remote app developer.


    Any question about "Can't connect to camera" issue
    Do not "stress" camera because we don't use yet a proper implementation. (Exynos limited open-source env.) Just Open & Close Camera apps carefully without force-closing them. (and do not do this frequently)
    27
    New build is up!

    Important changes have been made.

    Enjoy :D