[ROM][GT-P52XX][UNOFFICIAL][5.1.1] CyanogenMod 12.1

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Jun 3, 2015
Now it works. TWRP 2.8.1 was nessessary for installation.
I´ve been testing the new image and eversing is working fine except the only one app "MAPS with Me".


Oct 18, 2014
OH! and anyone know if charging is the same or slower for this rom?

---------- Post added at 01:19 PM ---------- Previous post was at 01:00 PM ----------

Weird updating to new version says
ERROR: MD5 does not match

Then it will abort installing.

Can you post the VPN fix like by itself? For flashing
Last edited:


Senior Member
Apr 12, 2015
You can make TWRP smoother? I can not always swipe. to.
There is a patch some of us are testing suppose to make twrp work better with x86, don't know if it's being applied to this version of twrp or not.

It wasn't. I just uploaded TWRP V3 with the patch included and it works very well, thanks!

Try http:// megashare. sc/ (Flash not working)

Firefox is the culprit here (missing function).

OH! and anyone know if charging is the same or slower for this rom?

I don't know but LPM is not used atm if it's what you were wondering. There is also room for improvement by changing cpufreq and some other things.

Weird updating to new version says
ERROR: MD5 does not match

Seems like a bad download.


May 16, 2015
Don't know if this is new or not, but I am trying to connect to the tablet via Kies and SmartSwitch to migrate my mother's 7" T210R to the P5210, and it just won't do it. Both applications in OS X just say "Connecting". Left both for over 30 minutes each.

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    Unofficial CyanogenMod 12.1 for Samsung Galaxy Tab 3 10.1

    CyanogenMod is a free, community built, aftermarket firmware distribution of Android 5.1 (Lollipop), which is designed to increase performance and reliability over stock Android for your device.

     * Your warranty is now void.
     * I am not responsible for bricked devices, dead SD cards, ...
     * You flash this at your own risks

    About CM

    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.

    Important information

    You need a recent TWRP version to flash this ROM.


    First time installing or coming from another ROM
    • Copy ROM to SDCard
    • Copy Houdini to SDCard
    • Copy GApps to SDCard
    • Boot into recovery
    • Backup EFS partition
    • Wipe -> Advanced Wipe -> Dalvik Cache + System + Cache + Data
    • Install ROM
    • Install Houdini
    • Install GApps
    • Reboot
    • First start takes a long time

    Upgrading from earlier version of CyanogenMod 12.1
    • Copy ROM to SDCard
    • Boot into recovery
    • Install ROM
    • Reboot

    [OPTIONAL] Converting filesystem to F2FS (thanks @michiil)

    The ROM has F2FS support. You may want to use it instead of the default (EXT4).

    This will delete ALL files/data from your tab.

    What you will need: A working PC and a working USB cable.

    1. Install the most recent Recovery
      Download the most recent Recovery from the second post. Flash the zip file in recovery. Back in the main menu press Reboot > Recovery
    2. Format Data and Cache to F2FS
      Wipe > choose Cache > repair or change file system > change file system > F2FS > Swipe to Confirm
      Go back and repeat the same steps with Data. I got some error messages when formatting Data but they don't seem to be a problem.
      Back in the main menu press Reboot > Recovery
    3. Install Rom + Houdini + Gapps
      Connect your tab to your PC and copy the zip files on the tab.
      Flash the files, reboot and enjoy :good:

    How to get back to EXT4

    You will again loose all files/data on the tab.
    Just repeat Step 2 but use EXT4 instead of F2FS.

    What's working

    • RIL for P5200 (data, SMS/MMS, calls)
    • GPS
    • 2D/3D acceleration
    • HW video encoding/decoding
    • Screen cast (miracast)
    • Sound
    • InfraRed
    • Camera
    • Wifi
    • Bluetooth
    • Sensors (and automatic brightness)
    • Smart cover lock/unlock
    • Multiuser
    • SDCard, USB OTG
    • Tethering (USB, Bluetooth, Wifi)
    • F2FS and exFAT

    What's not working

    • Chromecast
    • RIL (for P5220)
    • MHL
    • Secure videos/DRM (Widevine, Google Play Movies...)
    • HW audio decoding
    • SELinux (disabled)
    • You tell me

    How to root

    • Go to 'Settings/About tablet'
    • Tap 7 times on 'Build number'
    • Go back
    • Go to 'Developer options'
    • Tap on 'Root access'
    • Select 'Apps only' ('Apps and ADB' if you plan to use it in adb shell)

    How to help

    When something is not working correctly, in addition to common informations, I may ask you to provide logs. There are different kind of logs and it's not always easy to get all of them. For this, you can use SysLog (available on F-Droid or Google Play.

    There is currently a bug in the app. Download it from AndroidFileHost. Use this patch if you want to compile it yourself:

    diff --git a/app/src/main/java/com/tortel/syslog/utils/Utils.java b/app/src/main/java/com/tortel/syslog/utils/Utils.java
    index 40d41b8..80ae55c 100644
    --- a/app/src/main/java/com/tortel/syslog/utils/Utils.java
    +++ b/app/src/main/java/com/tortel/syslog/utils/Utils.java
    @@ -144,7 +144,7 @@ public class Utils {
                 Log.v(TAG, "Path: "+path);
                 //Make the directory
    -            if(!outPath.mkdirs() && !outPath.isDirectory()){
    +            if(!outPath.mkdirs() || !outPath.isDirectory()){
                     throw new CreateFolderException();
    Make sure to root device before using this app.

    To get the logs:
    • Start SysLog
    • Click on 'TAKE LOG'
    • Once log is taken, SysLog will try to share the resulting file, just cancel
    • Send me the file /sdcard/SysLog/[YYYY-MM-DD_HH.mm]/[YYYY-MM-DD_HH.mm].zip

    If you left 'Scrub potentially personal information from the logs' checked, you should be safe.

    ROM sources


    • Angel_666 , moonbutt74 and Restl3ss for starting the work on this device
    • Android-Andi for his device tree
    • Deltadroid for his GApps package
    • All testers of the "signup" thread
    • CyanogenMod and Google for Android
    • XDA
    • AndroidFileHost

    XDA:DevDB Information
    CyanogenMod 12.1 for GT-P52XX, ROM for the Samsung Galaxy Tab 3 10.1

    ROM OS Version: 5.1.x Lollipop
    ROM Kernel: Linux 3.4.x
    Based On: CyanogenMod

    Version Information
    Status: Beta

    Created 2015-05-05
    Last Updated 2016-05-29


    ROM - Beta 4 (20160529)
    Galaxy Tab 3 10.1 3G : GT-P5200 (MD5)
    Galaxy Tab 3 10.1 Wifi : GT-P5210 (MD5)
    Galaxy Tab 3 10.1 LTE : GT-P5220 (MD5)

    You can find old versions on AndroidFileHost. Version code is in file description.

    Houdini (20150521)
    Houdini for Android 5.0 (MD5)

    See Open Gapps, select Platform x86 and Android 5.1.


    See TWRP thread.


    Flash player (
    Flash player for x86

    There is currently a bug with HW video decoding/encoding: you can't have both. By default, the ROM provides HW video encoding but partial HW video decoding.
    If you want full HW video decoding, you can flash hw_decode.zip (you will however loose HW video encoding).
    Fixed in alpha 11.

    A bug appeared in Alpha 13 causing voice calls (in P5200) to be muted. It will be fixed in Beta 2. In the meantime, you can flash audio_test3.zip after flashing the ROM. Fixed in beta 2.


    Beta 4 (20160529)
    - CM update

    Old changes

    Beta 3 (20160210)
    - CM update
    - Fixed GPS
    - Updated F2FS driver

    Beta 2 (20151120)
    - CM update (stable/cm-12.1-YOG7D)
    - Fixed audio calls
    - Speaker by default for audio calls
    - Fixed video artifacts

    Beta 1 (20151027)
    - CM update
    - Better hardware buttons responsiveness
    - Enabled wifi hotspot for GT-P5210

    Alpha 15 (20151012)
    - CM update
    - Button lights are activated only when touching them (thanks to pawitp)
    - Reduced boot time (first one and when using encryption)

    Alpha 14 (20150922)
    - CM update
    - Fixed device encryption
    - Added HW keystore
    - Disabled CABC
    - Added stock extSdCard symlink (thanks @HassoNas)
    - Reduced boot time by launching MDS service (thanks to Tran Huu Tin)

    Alpha 13 (20150902)
    - Based on CM 12.1 YOG4 stable branch
    - Fixed sensors
    - Optimized zram
    - Added KeyDisabler
    - Added CABC

    Alpha 12 (20150806)
    - CM Sync
    - Fixed voice calls for P5200
    - Fixed GPS for P5200/P5220 (still partial support)
    - Fixed permissions for interactive governor
    - Used proper OmniROM patch for cursor
    - Added deadline I/O scheduler
    - Reverted to CFQ I/O scheduler by default
    - Disabled KSM

    Alpha 11 (20150728)
    - CM Sync
    - Fixed video encoding
    - Fixed audio bugs appearing in some games
    - Added FIOPS I/O scheduler (enabled by default)

    Alpha 10 (20150711)
    - CM Sync (Android 5.1.1_r6)
    - Fixed USB OTG settings
    - Added performance profiles
    - Fixed more green bar on some videos
    - Fixed reversed volume button
    - Reverted power hal

    Alpha 9 (20150615)
    - CM Sync
    - Added Stk and SamsungServiceMode
    - Fixed pinch zoom (by CM)
    - Set lz4 compression for zram
    - Set lzma compression for kernel
    - Cleanups / merges

    Alpha 8 (20150605)
    - CM Sync
    - Fixed third party VPN
    - Added smart cover support
    - Various fixes

    Alpha 7 (20150601)
    - CM Sync
    - Enabled KSM (for real, missed a commit in alpha 6)
    - Fixed audio glitches
    - Fixed green bar on some videos
    - Added F2FS support (needs TWRP V2)

    Alpha 6 (20150528)
    - CM Sync (Android 5.1.1_r3)
    - Enabled KSM and zram
    - Forced menu icon (in Firefox for example)
    - Fixed home button for secondary users

    Alpha 5 (20150520)
    - CM Sync
    - Fixed screen recording
    - Use opensource mixvbp

    Alpha 4 (20150517)
    - CM Sync
    - Adjusted power profile (needs testing)
    - Fixed HW video encoding (only from camera, screen recording not working)
    - Fixed Wifi direct
    - Various config fixes

    Alpha 3 (20150510)
    - CM Sync
    - Fixed wifi tethering
    - Fixed mouse cursor
    - Fixed show touches in developer options

    Alpha 2 (20150508)
    - Add P5220 ROM
    - Fixed bluetooth PIN and tethering
    - Add extra fonts
    - H icon for HSPA
    - Enable Wifi-Direct for all devices

    Alpha 1 (20150505)
    - Fixed camera for P5200
    - Fixed minimum brightness
    - Fixed hardware keys definitions
    - Enabled reboot to download
    Beta 3

    Hi there,

    Beta 3 is here. GPS is finally working and F2FS has been updated (hope it will fix the problems some of you had). CM has also been updated so a bunch of security fixes are included.
    I also updated the video corruption fix so if you have any green bars please tell me.

    I'm still investigating MHL and BLN support but have very limited free time...

    Happy flashing ;)
    Alpha 13

    Alpha 13 uploaded (based on the stable branch of CM12.1, it will help finding device specific bugs)

    Sorry guys, still no beta... and only one fix.
    However I added KeyDisabler, it lets you disable the capacitive keys and enable the navbar (in Buttons settings).
    Also added is CABC (in Display settings).

    Development is slowed down (again...) but I'm not giving up. I'm currently working on a clean TWRP version (almost done ;)).

    Thanks again for all the reports !

    Happy flashing
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