[ROM][SM-G850W][sltecan] CyanogenMod 13.0 UNOFFICIAL for the Galaxy Alpha (S801)

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kyasu

Senior Member
Sep 23, 2012
610
2,786
Tokyo
CyanogenMod is a free, community built, aftermarket firmware distribution of Android 6.0 (Marshmallow), which is designed to increase performance and reliability over stock Android for your device.

Code:
#include <std_disclaimer.h>

/*
 * Your warranty is now void.
 *
 * We are 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 us for messing up your device, we will laugh at you.
 *
 */
This is an unofficial CyanogenMod 13.0 build for the SM-G850W which is a Snapdragon variant of Galaxy Alpha and has an unlocked bootloader.
This ROM does not work with Exynos variant (SM-G850F) nor a locked bootloader (SM-G850A).

Instructions

  1. Make sure that your SM-G850W has the Lollipop bootloader and modem (The last installed stock ROM must be 5.0.2).
  2. Flash TWRP recovery via Odin.
    • Use Odin without 'Auto Reboot' option.
    • After flashing TWRP via Odin, shutdown your phone (for example remove battery). Don't reboot to the stock image which restores the stock recovery.
  3. Boot to TWRP recovery (Vol UP + Home + Power).
  4. Optional: Do nandroid backup
  5. Wipe data / Factory Reset
  6. Install the ROM (CM zip).
  7. Install the Google Apps.
Enjoy!

Known Issues

Everything seems to work fine.
  • None

Downloads

All: https://www.androidfilehost.com/?w=files&flid=42013
LineageOS 13.0: lineage-13.0-20170122-UNOFFICIAL-sltecan.zip
CyanogenMod 13.0: cm-13.0-20161223-UNOFFICIAL-sltecan.zip
TWRP: twrp-3.0.3-0-sltecan.tar
Latest Modem: G850WVLU1BPG1_G850WOYA1BPG1_bootmodem.tar

Sources

https://github.com/kyasu/android_kernel_samsung_msm8974
https://github.com/kyasu/android_device_samsung_sltecan
https://github.com/kyasu/android_vendor_samsung_sltecan

XDA:DevDB Information
[ROM][SM-G850W][sltecan] CyanogenMod 13.0 UNOFFICIAL for the Galaxy Alpha (S801), ROM for the Samsung Galaxy Alpha

Contributors
kyasu
ROM OS Version: 6.0.x Marshmallow
Based On: CyanogenMod/LineageOS

Version Information
Status: Stable
Current Stable Version: 2017-01-22
Stable Release Date: 2017-01-22

Created 2015-10-22
Last Updated 2017-01-22
 
Last edited:

modpunk

Inactive Recognized Contributor
Oct 14, 2011
1,718
6,646
Sony Xperia XZ1 Compact
Samsung Galaxy S10
Nice! Does the network operator search work without modifications?

#CONFIG_KERNEL_LZO not set
CONFIG_KERNEL_XZ=y

Will save you 2-3MB in the boot image. Which is very helpful to build e.g. twrp recovery. You can enable a lot more features ...
 
Last edited:

Blubberor

Senior Member
Dec 1, 2010
313
55
maybe important for others...
isn't there a unlocked version of g850a (general threads of alpha). will this snapdragon equipped galaxy alpha work with cm12.1 snapdragon or what are other differences of G850A and G850W?
 
  • Like
Reactions: cell2011

kyasu

Senior Member
Sep 23, 2012
610
2,786
Tokyo
Nice! Does the network operator search work without modifications?

#CONFIG_KERNEL_LZO not set
CONFIG_KERNEL_XZ=y

Will save you 2-3MB in the boot image. Which is very helpful to build e.g. twrp recovery. You can enable a lot more features ...
Network operator search, call echo cancellation, 4K video, and more are all working well.
Qualcomm's Snapdragon is developer friendly.
 

kyasu

Senior Member
Sep 23, 2012
610
2,786
Tokyo
maybe important for others...
isn't there a unlocked version of g850a (general threads of alpha). will this snapdragon equipped galaxy alpha work with cm12.1 snapdragon or what are other differences of G850A and G850W?
G850A has a locked bootloader and TWRP recovery/custom ROM cannot be installed.
G850A user needs a root method and Safestrap (Bootstrap / Recovery for locked bootloader).
 

cell2011

Senior Member
Apr 11, 2011
1,996
170
charleston wv
So what root/recovery method could we get for G850A. Any way of unlocking bootloader for this phone? I see the SRS root method has worked for some but not for all
 

modpunk

Inactive Recognized Contributor
Oct 14, 2011
1,718
6,646
Sony Xperia XZ1 Compact
Samsung Galaxy S10
Network operator search, call echo cancellation, 4K video, and more are all working well.
Qualcomm's Snapdragon is developer friendly.

Yes, echo cancellation is done by the ES chip. The G850F doesn't have set and completely does it in software. However it works fine in the meantime.

Qualcomm is open source in that area which is great. They are the opposite if it comes to open source graphics drivers.
 

leripe

Senior Member
Mar 18, 2012
1,514
889
So everything that doesn't work on the exynos alpha cm already works on this version?
 

krwilson

Senior Member
Oct 11, 2009
116
9
Suggestions for what Google Apps to use? It's been a while since I have flashed a ROM, this looks great, and I just picked up an Aplha.
 

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  • 17
    CyanogenMod is a free, community built, aftermarket firmware distribution of Android 6.0 (Marshmallow), which is designed to increase performance and reliability over stock Android for your device.

    Code:
    #include <std_disclaimer.h>
    
    /*
     * Your warranty is now void.
     *
     * We are 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 us for messing up your device, we will laugh at you.
     *
     */
    This is an unofficial CyanogenMod 13.0 build for the SM-G850W which is a Snapdragon variant of Galaxy Alpha and has an unlocked bootloader.
    This ROM does not work with Exynos variant (SM-G850F) nor a locked bootloader (SM-G850A).

    Instructions

    1. Make sure that your SM-G850W has the Lollipop bootloader and modem (The last installed stock ROM must be 5.0.2).
    2. Flash TWRP recovery via Odin.
      • Use Odin without 'Auto Reboot' option.
      • After flashing TWRP via Odin, shutdown your phone (for example remove battery). Don't reboot to the stock image which restores the stock recovery.
    3. Boot to TWRP recovery (Vol UP + Home + Power).
    4. Optional: Do nandroid backup
    5. Wipe data / Factory Reset
    6. Install the ROM (CM zip).
    7. Install the Google Apps.
    Enjoy!

    Known Issues

    Everything seems to work fine.
    • None

    Downloads

    All: https://www.androidfilehost.com/?w=files&flid=42013
    LineageOS 13.0: lineage-13.0-20170122-UNOFFICIAL-sltecan.zip
    CyanogenMod 13.0: cm-13.0-20161223-UNOFFICIAL-sltecan.zip
    TWRP: twrp-3.0.3-0-sltecan.tar
    Latest Modem: G850WVLU1BPG1_G850WOYA1BPG1_bootmodem.tar

    Sources

    https://github.com/kyasu/android_kernel_samsung_msm8974
    https://github.com/kyasu/android_device_samsung_sltecan
    https://github.com/kyasu/android_vendor_samsung_sltecan

    XDA:DevDB Information
    [ROM][SM-G850W][sltecan] CyanogenMod 13.0 UNOFFICIAL for the Galaxy Alpha (S801), ROM for the Samsung Galaxy Alpha

    Contributors
    kyasu
    ROM OS Version: 6.0.x Marshmallow
    Based On: CyanogenMod/LineageOS

    Version Information
    Status: Stable
    Current Stable Version: 2017-01-22
    Stable Release Date: 2017-01-22

    Created 2015-10-22
    Last Updated 2017-01-22
    5
    cm-13.0-20160305-UNOFFICIAL-sltecan.zip

    New build is available (See the first post).
    Sync with the latest CM source.
    Add Fingerprint scanner (kang from klte).
    4
    cm-13.0-20151220-UNOFFICIAL-sltecan.zip

    New build is available (See the first post).
    Sync with the latest CM source.
    Update graphics blobs.
    4
    cm-13.0-20151227-UNOFFICIAL-sltecan.zip

    New build is available (See the first post).
    Sync with the latest CM source.
    4
    cm-13.0-20151213-UNOFFICIAL-sltecan.zip

    New build is available (See the first post).
    Sync with the latest CM source.
    Now android version is 6.0.1.