[ROM][7.1.x|SM-T900| Unofficial LineageOS 14.1 (v2awifi)

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Recognized Developer
Aug 28, 2012
Thanks for fixing the website :)
...but is it only for me? - but I cant see an image in

Or will you "refill" the directorys? ;)
So I checked this morning and I could see builds in both. I didn't realize Jenkins was broke but now it is fixed to so the directories should start filling again.
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May 15, 2016
I just turned on this tablet again after not messing with it for a few years. So glad to see the support is still going strong. When installing the play store and opening it I try and update the apps but it says that there is not enough storage. I’ve checked and I have well over more than half the storage free.

Any troubleshooting tips for these issues mentioned above? Thanks!
Last edited:


Senior Member
Jul 28, 2014
In case someone has missed it, there's a LineageOS 17.1 thread in the original development section.


Dec 20, 2007
I don't appreciate you taking credit for the teams work and being a build bot. I know you gave credit to the exynos5420 repo but you claim all the proceeds from it. The build is not stable enable for release. Also just reffing some basic source is really low too. I am planning on releasing and actually support the build here soon. This is goes for both the T520 and T900. With this, there is some considerations on making the device tree repos private...
May I please ask what's the latest on LOS 17.1 ?



Nov 25, 2016
Good evening,

thank you for keep the Tab alive. I just flashed the Rom.
For your Information: The newest TWRP 3.5.1 doesn't work for me. When flashing the rom i always get the "Error 7"-failure.
But TWRP 3.5.0 (as mentioned some pages before) do the trick!

Kind regards


May 15, 2016
Flashed 3.5.1 using the twrp app and when it I went to reboot to recovery it only loads to the screen "Downloading...Do not turn off target!" I am able to get into download mode by holding in Volume down+home+power. However, nothing registers on any Pc or in Odin that it is in download mode. I let the tablet die out in hopes that would do something, but as soon as I plugged it back in it went straight back to "Downloading...Do not turn off target!" when normally it will stay shut off and start charging. I see that someone said earlier that 3.5.1 is a no go and I am learning that now. I have used the same cable for years when it comes to this tablet but my PC has changed. I ordered the cable that originally came with it hoping that will give me better luck. But anytime I plug the tablet in it just goes directly back to "Downloading...Do not turn off target!". Any thoughts on what I can do to get it up and running again? I cannot get into any kind of recovery mode at all.


Apr 19, 2012
I really appreciate your dedication on this project. Please mate release the 17.1 asap. Updating this one is really pointless if 17.1 is in horizon.
People have either moved on to other devices or stayed with this for this long and are eager to get their hands on newer version rather than 14.1 update.
I had a taste of 17.1 on this device from other thread and besides the crashes and some stuff not working is absolutely amazing and I cannot wait for your release.


Senior Member
Jul 11, 2021
Installed on SM-T900:

1) twrp-3.6.0_9-0-v2awifi
2) lineage-14.1-20211126-UNOFFICIAL-v2awifi
3) open_gapps-arm-7.1-pico-20211125

Works perfect. Reboots perfect. No problems until ..........

went to about tablet
LeneageOS updates
Dec 3,2021 315MB downloaded and "INSTALL" button is displayed
says "Apply update"
hit "OK"

>>>>> get triangle Updater + "Install error" on pulldown menu

I can boot into twrp/recovery w/ Volume Up + Home + Power


Oct 1, 2009
Installed on SM-T900:

1) twrp-3.6.0_9-0-v2awifi
2) lineage-14.1-20211126-UNOFFICIAL-v2awifi
3) open_gapps-arm-7.1-pico-20211125

Works perfect. Reboots perfect. No problems until ..........

went to about tablet
LeneageOS updates
Dec 3,2021 315MB downloaded and "INSTALL" button is displayed
says "Apply update"
hit "OK"

>>>>> get triangle Updater + "Install error" on pulldown menu

I can boot into twrp/recovery w/ Volume Up + Home + Power
You need to flash the update through twrp


Mar 1, 2011
Hi every one
I installed this rom (14.1)on my tab pro sm-t900 12.2 inch
All things work ok
But in instagram i can't send any video story or post a video and my story and posting video not uploaded.just i can post a photo or story a photo
Sorry for my bad english
Plz help

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  • 37
    LineageOS is a free, community built, aftermarket firmware distribution of Android 7.1.* (Nougat), which is designed to increase performance and reliability over stock Android for your device.

    #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.
    LineageOS 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. You will need to provide your own Google Applications package (gapps). LineageOS does still include various hardware-specific code, which is also slowly being open-sourced anyway.

    Important information:
    This thread is for Unofficial LineageOS 14.1 (v2awifi) ROM for the Samsung Galaxy Tab Pro 12.2. The following will not be supported here:
    • Custom kernels
    • Mods
    • Xposed

    Do not ask for ETAs. If you do, I will ignore you and your post.

    • If you see a message at boot about Recovery or Kernel is not SEANDROID Enforcing, you can ignore it. This is just telling you that you are not running Samsung stock software. It has no effect on recovery or the ROM itself nor related to either.

    I don't support Xposed and any logcat which includes a Xposed module will be ignored.

    You're kindly invited to not report bugs if you:
    • Flashed a custom kernel
    • Installed or did mods from untrusted sources
    • Modified system files

    Bootloader Information
    You need to make sure you have a Lollipop bootloader installed or else your device won't boot. Here you can go grab the latest bootloader and odin and flash it in download mode. Read all the steps before you do this.

    Make sure you have a full backup because just in case you something fails.

    Here are the steps to flash this via ODIN:
    1. Make sure you have a full backup because just in case you something fails. Here are the steps to flash this via ODIN.
    2. Reboot your tablet into download mode. Do this by first switching off the phone, then pressing and holding the volume down + home button together and then pressing the power button. Press volume up button to enter download mode.
    3. Open ODIN on your computer. You?ll see the ID:COM box turning yellow with a COM port number upon successful connection with the tablet.
    4. In ODIN click the BL button, select the bootloader firmware. It's a tar file.
    5. Make sure Auto Reboot & F. Reset Time options are selected in ODIN
    6. Click on the start button. When the process is completed your phone will reboot.

    1. Download the zip(s)
    2. Install a compatible Recovery (This will not work with the P900 recovery)
    3. --I have built a new version of TWRP with the MM kernel. MTP, Vibations, ADB now work and there are performance increases. Link
    4. Perform a nandroid backup of your current ROM (optional)
    5. Wipe data/factory reset
    6. Flash LineageOS
    7. Install the Google Apps addon package (Optional)
    8. Reboot

    The SU root binary is no longer installed with ROM by default. If you would like to install root, please go here and download the binary.

    Before posting in this thread, make sure of a few things:

    • You used the search function of the forums
    • If you are the only one having a problem. Boot into recovery, wipe data/factory reset, reflash the rom/gapps and nothing else. Boot up and see if the problem persists.
    • Make sure your post is relevant to this thread.
    • Logs or it didn't happen! You can use this: Syslog App


    Latest Nightly Date: Builds are built weekly now through the Exynos5420 Jenkins Server
    Latest Device Builds
    Google Drive Device Builds (Old - Not maintained)

    Google Apps
    http://opengapps.org/ - Thanks to the OpenGapps team!
    Use the 7.1 and Arm options when downloading.

    • Lower than stock audio volumes
    • MHL out to TV not working

    The LineageOS team would like to thank everyone involved in helping with testing, coding, debugging, & documentation.

    Kernel: Link
    Device Tree: Link

    @Valera1978 Initial device tree
    @UpInTheAir for his kernel magic and misc fixes
    @DGT79 for his testing efforts and helping me manage the thread.
    @chhaggerty, @tbjr50 and @titidu3701 for their testing efforts.
    Exynos5420 Dev Team ( @deadman96385 @thompatry @ZakooZ @Orion116 @mosimchah @joshndroid @Andmoreagain @thermskin, @javelinanddart, @tincho5588 )

    XDA:DevDB Information
    [ROM][7.1.x|SM-T900| Unofficial LineageOS 14.1 (v2awifi), ROM for the Samsung Galaxy Tab Pro 12.2, 10.1, 8.4

    ROM OS Version: 7.x Nougat
    ROM Kernel: Linux 3.4.x
    Based On: LineageOS

    Version Information
    Status: Stable

    Created 2016-12-24
    Last Updated 2017-01-26
    Just a quick update.

    I am very close to releasing Oreo. I have a few more bugs to work out and then I feel comfortable to release it.
    Just a small update, the pie build is coming a long nicely. I expect to release it in the next month or two at the latest. I will not guarantee all the features will work but I have kept you guys deprived for so long I will give it a shot. I will keep you updated.
    Hey Guys,

    I know it has been awhile since I have personally posted an updated. Life has been super busy for me. Working 60 hours a week, wrapping up this job, starting a new job and moving. Don't get me wrong, I ready everyone of your posts and work with @DGT79 on posting solutions, looking at logs, and making this ROM better.

    With the Exynos5420 Team having a build server "Jenkins", I will no longer being announcing builds. We are working on setting a final scheduling on builds but it is looking like weekly builds on Fridays. This week, we will run builds tomorrow due to Jenkins going down for some maintenance. You can find device changes on the Exynos5420's GitHub account. We are working on a change log server but that is a few months out. If you have any questions, about this please let me know.

    So a new hot topic item is root. A lot of ROM teams are moving away from baking in root (no longer having the SU binary installed) into the ROM. There is multiple reasons behind this. Some apps just will not flat out work if it detects any form of the SU binary installed. For an example Pokemon Go or TV streaming apps. Also there is concern of identity theft with the SU binary being enabled. We, as a team (Exynos5420 Team), have decided to follow this path. It should be up to the user for this risk. It is easy for you to install the SU binary if you want it though. You just need to flash a root zip after flashing the ROM. From here, you can use whatever SU program you may want such as SuperSU. You can find the SU binaries here from Lineage. I will update OP to reflect this. You can find more information about why root was removed from the ROM here.

    Another thing that you may have noticed on the downloads site is there is a new ROM the Exynos5420 team is developing. It is called LiquidDeathOS. It is a ROM based off of the Exynos SOC. We have plans to expand it to all Exynos SOCs in the future. We have a few builds out for Alpha testing and it is looking promising. It is very early in development and has a lot of bugs so please be patient. What we are trying to accomplish is to focus on speed, stability, and battery life. With this new ROM, we will be using AOSP code directly from Google. There will be no CAF code involved. (If you do not know what CAF is, please Google Code Aurora.) As soon as I feel comfortable releasing a build for public consumption I will. So hang in there. It is going to be fantastic and will blow Lineage out of the water.

    I think that is all I have for right now for new updates. As always keep giving the great feedback and I will keep putting out the great work. Feel free to donate me a beer or two.
    I guess no one is attempting to do Oreo for our old 12.2 tablet huh?

    Please read some of my previous posts. I am currently working on it but is not stable for public release.