yashsingh1/xdaforums huggingface dataset:
[Galaxy Tab S2 Android Development] MSe1969:
I am using my tablet all the time and I don't have issues. As far as I know, the deep sleep issue is specific to the various attempts to get LineageOS 15.1 properly working on this device, but not to 14.1, which runs very stable.
[Galaxy Tab S2 Android Development] tripLr:
I have this device, will try your build. I am tester for los15.1 I have stock rooted CQI5 bootloader, so hopefully I won't need to downgrade
[Galaxy Tab S2 Android Development] MSe1969:
Good luck, pls. let me know. As you will flash 'Nougat over Nougat' I don't think it is an issue...
[Galaxy Tab S2 Android Development] MSe1969:
February Build

A new build with February 2019 security patches is available for download here

Happy flashing, M.
[Galaxy Tab S2 Android Development] tripLr:
Can u post your roomservice please ?

I want to try some kernel fixes. Thanks
[Galaxy Tab S2 Android Development] MSe1969:
??? - Source code link in the OP points to the local_manifests repo . . .
[Galaxy Tab S2 Android Development] MSe1969:
As announced here, LineageOS has discontinued to deliver official 14.1 builds in the course of providing LineageOS 16.0 builds.

The 14.1 tree however will continue to be maintained for security patches by the community (I am one of these contibutors, btw).

So this build will normally continue.
[Galaxy Tab S2 Android Development] MSe1969:
New build with March sec. patches

New build ready for download:

https://www.androidfilehost.com/?fid=1395089523397916389

- ASB March 2019 patches (sec. string 2019-03-05)

- Android System Webview updated to 72.0.3626.121 (includes CVE-2019-5786)
[Galaxy Tab S2 Android Development] MSe1969:
New build with April 2019 ASB

New build with April Security patches available for download.
[Galaxy Tab S2 Android Development] tripLr:
No mirrors found
[Galaxy Tab S2 Android Development] MSe1969:
Keep trying, AFH sometimes is "funny"
[Galaxy Tab S2 Android Development] MSe1969:
New build with May sec. patches

New build ready for download:

https://www.androidfilehost.com/?fid=1395089523397962204

- ASB May 2019 patches (sec. string 2019-05-05)

- Android System Webview updated to 74.0.3729.112

Happy flashing, M.
[Galaxy Tab S2 Android Development] Homuncoloss:
Thank you for your work.

Is battery drain better than in the other roms with the deep sleep problem?
[Galaxy Tab S2 Android Development] MSe1969:
Can't judge on other ROMs, but the deep-sleep issue seems related to Oreo ROMs, not to Nougat.

At least regarding my own experience with this ROM, it seems OK.
[Galaxy Tab S2 Android Development] MSe1969:
New build with March 2023 ASB patch backports

Hi all,

a new build is available for download and is already offered as OTA via updater app:

https://sourceforge.net/projects/lin14-mgoms/files/gts210ltexx/lineage-14.1-20230325-UNOFFICIAL-gts210ltexx.zip/download

Custom build release March 2023

System Webview 111.0.5563.58

Happy flashing - regards, M.
[Galaxy Tab S2 Android Development] MSe1969:
New build with April 2023 ASB patch backports

Hi all,

a new build is available for download and is already offered as OTA via updater app:

https://sourceforge.net/projects/li...-20230423-UNOFFICIAL-gts210ltexx.zip/download

Custom build release April 2023

System Webview 112.0.5615.136

Happy flashing - regards, M.
[Galaxy Tab S2 Android Development] joska59:
Hi MSe1969

How can I use microg? Download from fdroid and install like an app, ore rename to zip an flash it with twrp? I don't understand your hint from start of this thread.

Joska
[Galaxy Tab S2 Android Development] MSe1969:
Download from F-Droid and install as app (in fact three apps). As outlined in the hints, you should read the official install instructions (link provided). You would need to activate the microG repository in F-Droid first.
[Galaxy Tab S2 Android Development] joska59:
Okay, ich habe es getan und jetzt, nachdem ich den Stramp mit Twrp geblitzt habe, bleibt mein 815 im Bootloop.
[Galaxy Tab S2 Android Development] MSe1969:
?? - for microG, you don't need to flash anything in TWRP for this build.
[Galaxy Tab S2 Android Development] joska59:
I installed your rom in twrp. Do you say, that is not (!) necessary? B.t.w. in the while, I found an older version of your rom, I could install and it did't run into bootloop. Puuh, next step, I installed all files of fdroid: microg.org/froid/repo, I could login to my "Konto", but store is not able to install. All files (0.01/0.02/0.10) are not able to install. There are not so much apps, I need, but these are from google play, so, I must try to find a solution.

With all other roms my tab S2 has infinite logouts from wifi and no gps, so, your rom could be the final stable solution :-)
[Galaxy Tab S2 Android Development] joska59:
mmm, I'd installed aurora store, but...probleme with parsin, all apps failed, puuh, strong way :-)
[Galaxy Tab S2 Android Development] MSe1969:
As described in the install instructions (OP):

You would flash the ROM itself via TWRP, which you correctly did, but I have understood your question being about microG. And microG is not flashed in TWRP, but installed as apps, in fact three apps, which I have seen from your comments you did.

Sometimes, the TWRP of this device does not properly clean stuff while flashing. If you experience a "bootloop", please try the following: Enter TWRP, choose "Delete", then "Advanced delete" and check only 'Dalvik / ART Cache' and 'Cache', leave all other options unchecked and swipe. After that, the reboot should work without bootloop.

The so-called "FakeStore" app of microG is

not

an app store, it only mocks the existence of the Google Play Store to apps, as otherwise, those would maybe refuse to work. You should install the app 'AuroraStore' from F-Droid, this is an anonymous frontend to the real Google play store, allowing you to download and install any app available on the playstore (and that without the need of a Google account).

See above: AuroraStore

Thanks for the feedback - hope my advice is useful to you.
[Galaxy Tab S2 Android Development] MSe1969:
New build with May 2023 ASB patch backports

Hi all,

a new build is available for download and is already offered as OTA via updater app:

https://sourceforge.net/projects/lin14-mgoms/files/gts210ltexx/lineage-14.1-20230512-UNOFFICIAL-gts210ltexx.zip/download

Custom build release May 2023

System Webview 113.0.5672.77

Happy flashing - regards, M.
[Galaxy Tab S2 Android Development] MSe1969:
New build with June 2023 ASB patch backports

Hi all,

a new build is available for download and is already offered as OTA via updater app:

https://sourceforge.net/projects/lin14-mgoms/files/gts210ltexx/lineage-14.1-20230622-UNOFFICIAL-gts210ltexx.zip/download

Custom build release June 2023

System Webview 114.0.5735.131

Happy flashing - regards, M.
[Galaxy Tab S2 Android Development] ShakriShikri:
Hi I bought the Sam Tab S2 815 with voda UK locked in 2016. have later sim unlocked and used with other sims. I installed stock rom and after that could not get into LTE. yesterday installed the LinOS18.1 from another thread and still can't get into network. I am getting a IMEI unknown and No service status. Could not get into Engineering Mode(MTK) with tools as the option itself is not available. I am going to try the above rom next week. Does your custom rom LinOS 14.1 support LTE?
[Galaxy Tab S2 Android Development] MSe1969:
Yes, LTE works well on my device.

You originally replaced the branded Vodafone Stock ROM with an unbranded Stock ROM, before flashing any Custom ROM right?
[Galaxy Tab S2 Android Development] ShakriShikri:
Yes flashed a stock rom, but didn't note the baseband version as the tablet suddenly stopped responding and have to force with an UK Voda stock rom. after that I couldn't get the network. so I tried the LinOS 18.1 from another thread through YouTube videos.
[Galaxy Tab S2 Android Development] MSe1969:
It's important to get the right Stock ROM to have the proper modem (baseband) re-flashed. This is not part of the ROM.
[Galaxy Tab S2 Android Development] ShakriShikri:
Thanks for your reply. Is there anyway I can find the right baseband now? As said I couldn't get it earlier as it was not responding. I did have backups of folders I needed but not a system backup
[Galaxy Tab S2 Android Development] ShakriShikri:
I do know my imei number from the original box, will that help?
[Galaxy Tab S2 Android Development] MSe1969:
I am afraid not really. You would need to get somewhere simply an unbranded Stock ROM for the T815 for your country (or broader region) and flash it completely via Heimdall (or Odin). Back in 2016, I had some trouble finding one, when I had to get a newer one, as the bootloader I had originally refused to boot LineageOS. There were many shady sites claiming to have everything, you "only" had to become a paying "member" etc. I finally found what I needed at that time after much searching. When you search now, you'll find some sites, but I can't judge about their quality. Maybe other readers have a good advice for you?
[Galaxy Tab S2 Android Development] Kirek50:
At this address there are ROMs for several countries and the EU version: https://stockromfiles.com/samsung-galaxy-tab-s2-9-7-sm-t815-stock-rom/
[Galaxy Tab S2 Android Development] MSe1969:
New build with July 2023 ASB patch backports

Hi all,

a new build is available for download and is already offered as OTA via updater app:

https://sourceforge.net/projects/lin14-mgoms/files/gts210ltexx/lineage-14.1-20230712-UNOFFICIAL-gts210ltexx.zip/download

Custom build release July 2023

System Webview 114.0.5735.196

Happy flashing - regards, M.
[Galaxy Tab S2 Android Development] phaleg:
Thanks man for these monthly updates, I appreciate that you keep a great device alive and prevent people from further consumistic behaviors :)
[Galaxy Tab S2 Android Development] MSe1969:
New build with August 2023 ASB patch backports

Hi all,

a new build is available for download and is already offered as OTA via updater app:

https://sourceforge.net/projects/lin14-mgoms/files/gts210ltexx/lineage-14.1-20230816-UNOFFICIAL-gts210ltexx.zip/download

Custom build release August 2023

System Webview 115.0.5790.166

I do not mention this explicitly, but each month, the kernel also receives frequent sec. patches.

Happy flashing - regards, M.
[Galaxy Tab S2 Android Development] MSe1969:
New build with September 2023 ASB patch backports

Hi all,

a new build is available for download and is already offered as OTA via updater app:

https://sourceforge.net/projects/lin14-mgoms/files/gts210ltexx/lineage-14.1-20230916-UNOFFICIAL-gts210ltexx.zip/download

Custom build release September 2023

System Webview 116.0.5845.163

Version upstream for boringssl and freetype

Latest sec. fixes for aac component

Happy flashing - regards, M.
[Galaxy Tab S2 Android Development] MSe1969:
New build with October 2023 ASB patch backports

Hi all,

a new build is available for download and is already offered as OTA via updater app:

https://sourceforge.net/projects/lin14-mgoms/files/gts210ltexx/lineage-14.1-20231025-UNOFFICIAL-gts210ltexx.zip/download

Custom build release 2023-10-01

Upstream of ffmpeg

CVE fixes in flac (CVE-2017-6888,CVE-2020-0499,CVE-2021-0561)

Fixes for CVE-2023-4863 and CVE-2023-5217 (webp and libvpx)

System Webview 117.0.5938.140

Happy flashing - regards, M.
[Galaxy Tab S2 Android Development] Ad3s12:
Hi, I'm having wake-up lags during normal usage, even while connected to the charger. Is this normal? Latest build.
[Galaxy Tab S2 Android Development] MSe1969:
New build with November 2023 ASB patch backports

Hi all,

a new build is available for download and is already offered as OTA via updater app:

https://sourceforge.net/projects/lin14-mgoms/files/gts210ltexx/lineage-14.1-20231125-UNOFFICIAL-gts210ltexx.zip/download

Custom build release 2023-11-01

System Webview 119.0.6045.134

Happy flashing - regards, M.
[Galaxy Tab S2 Android Development] MSe1969:
New build with December 2023 ASB patch backports

Hi all,

a new build is available for download and is already offered as OTA via updater app:

https://sourceforge.net/projects/lin14-mgoms/files/gts210ltexx/lineage-14.1-20231224-UNOFFICIAL-gts210ltexx.zip/download

Custom build release 2023-12-01

Happy flashing - regards, M.
[Galaxy Tab S2 Android Development] AlinLee:
Webview support for Android 7 has stopped :(
[Galaxy Tab S2 Android Development] MSe1969:
I know - might be that we find a work-around...
[Galaxy Tab S2 Android Development] MSe1969:
New build with January 2024 ASB patch backports

Hi all,

a new build is available for download and is already offered as OTA via updater app:

https://sourceforge.net/projects/lin14-mgoms/files/gts210ltexx/lineage-14.1-20240115-UNOFFICIAL-gts210ltexx.zip/download

Custom build release 2024-01-01

Cromite Webview 120.0.6099.216

Please note:

Chromium project has officially dropped support for Android 7 (Nougat) in release 120. With the people I work together with and from whom I benefit in regards to still backport patches for cm-14.1 / Android 7 we've found that right now, the code is still compatible and this is so far only a technical setting, which could easily be reverted, so a new build using the 'Cromite' project on Github as a base still supporting Android 7 could be created and added to that build.

Future will show, how long an updated webview can still be provided...

Happy flashing - regards, M.
[Galaxy Tab S2 Android Development] NeWONEx:
Thank you, for keeping this device alive. I appreciate it.
[Galaxy Tab S2 Android Development] MSe1969:
New build with February 2024 ASB patch backports

Hi all,

a new build is available for download and will soon be offered as OTA via updater app:

https://sourceforge.net/projects/lin14-mgoms/files/gts210ltexx/lineage-14.1-20240226-UNOFFICIAL-gts210ltexx.zip/download

Custom build release 2024-02-01

Cromite Webview 121.0.6167.164

Happy flashing - regards, M.
[Galaxy Tab S2 Android Development] MSe1969:
New build with March 2024 ASB patch backports

Hi all,

a new build is available for download and will soon be offered as OTA via updater app:

https://sourceforge.net/projects/lin14-mgoms/files/gts210ltexx/lineage-14.1-20240313-UNOFFICIAL-gts210ltexx.zip/download

Custom build release 2024-03-01

Happy flashing - regards, M.
[Galaxy Tab S2 Android Development] phaleg:
I have just updated it :D
[Galaxy Tab S2 Android Development] kartik_09:
btw, MrBrause has made a rom on lineageos 18.1 with SELinux enforcing using a 3.10.9 kernel which is a forked kernel by metterschleg from the universal5433 kernel , so would it be possible for you to start building roms for 18.1 as it is currently supporting SELinux enforcing? so it would be worth it, if so it would be greatly appreciated by us
[Galaxy Tab S2 Android Development] MSe1969:
Thanks for the hint - looks definitely interesting. I have to read closer to the threads and have a closer look. But I think I'll give it a try - if I understand correctly, the issues still present are:

- Make phone calls with a headset only (bad microphone quality if using device)

- Fingerprint not really working (it does not work in this build either)

- DRM : streaming only SD quality (no difference to this build)

- Offline charging: Make sure to wait ~30 seconds after disconnecting the charger before switch on (something to keep in mind!)

If that's all, definitely worth a try. For this device being a tablet, this may "almost" qualify for daily use. Do you confirm this, based on your own experience? (I have seen you did contribute to the discussions in MrBrause's thread)

I provide 'de-googled' microG 18.1 (and higher releases) builds for other devices, which are not suitable for Gapps - if there is interest, it definitely is an option (sounds at least interesting to me).

Just to be clear:

As explained already in the OP, I am not really good at "bringing up" a device, so all kinds of

device-specific

issues (such as not working fingerprint, boot loops after offline charging, when not waiting for 30 seconds, bad microphone quality, etc.) will

definitely not

be fixed by me, as I simply have not really the right skills for that (and also not the patience/time at the moment).

So if you are keen on getting one of my privacy-focused 18.1 builds, which I provide for other devices - and indeed, the above issues are the only issues, then there might be some Android R future for this device from my end.

However, if you are in fact not really "perfectly happy" with the current state of LineageOS 18.1 for our device (i.e. you hope I could fix the device-specific issues), I won't really be able to improve that situation - so in that case, I'd appreciate an honest feedback indicating, that it wouldn't really be worth my time to look into this...
[Galaxy Tab S2 Android Development] kartik_09:
for this device being qualify for daily use, yes it mostly does

and on a second though, the privacy focused 18.1 builds def seem interesting and would want to use them, and yes the above issues are the only issues i found in the rom, except the misleading battery size in the kernel which shows it as 4000mah battery instead of its actual size ( not really makes a difference)

and i am not expecting for the device specific issues to be fixed,( probably because metterschleg does not own a t815 and just forked the kernel so he did not tested it )

i was just wanting there to be an properly supported 18.1 builds for this device, be it degoogled or not, meaning that the device would get regular security updates and something securer, and if you start 18.1 builds like your 14.1 builds it would definetely be nicer to use it, and now i am definetely a bit keen to use 18.1 privacy focused builds
[Galaxy Tab S2 Android Development] kartik_09:
in short i though it would be nice if you did these regular updates with 18.1 if the bugs are practically the same and SELinux works
[Galaxy Tab S2 Android Development] aljazzair:
So after dabbling in the bleeding edge world of LineageOS 20 for T815, I decided to try a LOS14 build for more stability and to test if audio was working fine.

I did an advanced wipe of everything except SDCard/USB, followed by a Format Data in TWRP (latest version).

After that I did adb sideload for lineage-14.1-20240313-UNOFFICIAL-gts210ltexx.zip, then open_gapps-arm-7.1-mini-20220215.zip then Magisk, then proceeded to reboot to system.

Before the reboot started I saw a warning in TWRP :

you have no OS installed! are you sure !

So I figured I made a mistake.

Went back Advanced Wipe everything, format data.

Did adb sideload lineage-14.1-20240313-UNOFFICIAL-gts210ltexx.zip alone just to test.

When I proceeded to do a System reboot, again TWRP warned me: you have no OS installed.

I rebooted to System anyhow, got a LineageOS animation, it booted to the first screen with incessant popups with errors such about android.media.process crashing, apps stopping, etc...

I tried to go into through the setup anyhow, but it went back to the Lineage logo and was stuck there until I managed to reboot to recovery.

EDIT: managed to get back to TWRP, wiped everything,

reflashed lineage-14.1-20240313-UNOFFICIAL-gts210ltexx.zip

followed by open_gapps-arm-7.1-mini-20220215.zip

And I get a incessant popup about Google Services Framework stopping.

It prevents me from going through the setup.

Any pointers as to what may have gone wrong?
[Galaxy Tab S2 Android Development] MSe1969:
Hi,

most important answer first: I don't know ! This means, that what follows are ideas, of what you could try. Please note, that I haven't yet flashed anything beyond Lineage 16.0 on my own S2 Tab.

Anyway, some ideas from my end:

1. TWRP Version

I myself use version 3.6.1_9-0 - sometimes it is not advisable to use the very latest version of TWRP on an old device, especially if you don't want to flash the currently latest version of Android, which right now is Android 14 (LineageOS 21.0). So try to downgrade TWRP.

2. TWRP advanced wipe

What should be wiped is /system /data /cache /Dalvik and yet, format /data - more not necessary/advised. (SD-Card and USB-OTG not needed). Might be, that the newest TWRP 3.7.x offers to also wipe any "special partition", which you should not do!

3. TWRP option 'wipe cache' after flashing

Sometimes, when using the option to wipe cache after having flashed a ROM (not via sideload), the subsequent boot fails or loops - so try, after flashing or sideloading, to just wipe cache and dalvik manually via 'advanced delete', without touching any other partition.

4. LineageOS 20/21 experiments

I have no idea about the Tab S2 ROMs, but e.g. for the falcon/peregrine devices, where I also provide LineageOS 14.1 builds, very recent ROM attempts for Android 12 have messed up with the partition scheme and overwritten items from other partitions - please read carefully, whether your experimental builds aim at doing such things...

If yes, it may be a good idea to try obtaining an original Samsung firmware image and go back to Stock first...

Regards, M.
[Galaxy Tab S2 Android Development] aljazzair:
Many thanks for taking the time to answer.

It is helpful, as I now understand that playing with ROMs is a bit of an art.

Newer ROMs for this device are not supposed to change the partition table, AFAIK, and the latest version of TWRP does not offer to alter special partitions beyond Dalvik, System, Data, Internal Storage & Cache.

It may be that my version of TWRP, which is the latest available for the Tab S2, is a bit buggy, or that I have to play with the Wipe Cache option after flashing.

I will post the results here if I find that it is beneficial to the community.

Thanks again.
[Galaxy Tab S2 Android Development] MSe1969:
FYI: I have now made and flashed a test build using my sources - looks good so far - will do some more testing and if ok, start to patch the kernel - stay tuned...
[Galaxy Tab S2 Android Development] MSe1969:
LineageOS 18.1 Test build

OK, I have created a build using MrBrause's work as a base and I think I will go into that direction. So far I like it, but I have to test more deeply. So anybody interested in doing some testing: download here - Feedback very welcome and appreciated!

As indicated before, I provide for other devices privacy-focused, sec. enhanced 'de-googled' builds with pre-installed microG, features list can be seen e.g. here (look build flavor B). The test build has the same features.

Please read the OP of this thread on how to install.

(tl;dr : Make a backup, wipe/format device - you can't dirty-flash - but I urge you to carefully read through - you have been warned)

Assuming that there won't be any unacceptable pain points, my plan is to switch to LineageOS 18.1 - next step is comprehensive kernel sec. patching - I'll still provide an April build of LineageOS 14.1 with ASB backports, but would then open a new thread.

Happy flashing!
[Galaxy Tab S2 Android Development] kartik_09:
Thanks, will flash soon as a bit busy rn , will switch to this soon ,

Btw (sorry if i appear disrespectful) i wanted to say that LOS20 builds for t815 by mrbause does support selinux enforcing, and if im right, android 11 stopped getting monthly sec patches, so you would still need to backport patches, so i wanted to say if u would continue with 18.1 or move to 19 or 20? , as in long term it might be a lil easier,(if im right)

Still would switch to this rom as its privacy focused
[Galaxy Tab S2 Android Development] MSe1969:
In regards to LineageOS 20 : We talk about a 3.10 kernel and LineageOS has communicated in 2022, when LineageOS 19.1 was rolled out, that due to Android 12 not supporting iptables any longer (to be more precise: The iptables executable, which still exists, only acts as a frontend to read the iptables legacy syntax, but to apply in fact eBPF filtering - which can't be backported to 3.x kernels), only devices with at least a 4.9 kernel (or even 4.4 with heavy backports) would get the update.

How was that "sound barrier" overcome?
[Galaxy Tab S2 Android Development] kartik_09:
Sorry but couldnt understand what u meant by sound barrier
[Galaxy Tab S2 Android Development] MSe1969:
"Sound barrier" was meant as an allegory