[Samsung Galaxy Tab A series Guides, News, & Discus] pankspoo:
First of all this is not my work is just tried this rom and its preety stable. Thanks to developers @phhusson @Magendanz

DESCLAIMER :use it your own risk.

So finally this rom booted on galaxy tab SM-T515 everything thing is working with small bugs as mentioned below.

Download files given below:

Bugs :

1)voLTE: not working tried phh treble settings to solve the issue but no luck.

Other networks, data calling works perfectly

2)MTP: mtp not working but you can transfer files after booting device in TWRP mode

3)audio not recording in videos use open camera app and go to settings and set default audio as a source.

4)For Linageos 19 android 12 twrp internal storage nonaccesible so to restore back to stock ROM just falsh latest Odin firmware using

ODIN app

Reverting to Samsung oneui:

For Linageos 19 android 12 twrp internal storage nonaccesible so to restore back to stock ROM just falsh latest Odin firmware using

ODIN app

Download firmware using this app:

Download link for Android/Linux/Mac/Windows:

Releases · zacharee/SamloaderKotlin

Contribute to zacharee/SamloaderKotlin development by creating an account on GitHub.

github.com

Linageos18.1 user restore your oneui backup using twrp or use ODIN firmware.

Except these you can check and tell me I didn't found anything till now

Download this gsi file:(only this is compatible)

https://sourceforge.net/projects/andyyan-gsi/files/lineage-18.x/lineage-18.1-20211010-UNOFFICIAL-treble_a64_bvS-vndklite.img.xz/download

Download arm 32 android 11 gapps :

The Open GApps Project

OpenGApps.org offers information and pre-built packages of The Open GApps Project. The Open GApps Project is an open-source effort to script the automatic generation of up-to-date Google Apps packages. All Android versions and platforms supported.

opengapps.org

Linageos 19 android 12:(Gapps included)

https://sourceforge.net/projects/andyyan-gsi/files/lineage-19.x/lineage-19.0-20220114-UNOFFICIAL-treble_a64_bgS.img.xz/download

Download magisk zip:

https://dl.magiskapp.com/MagiskZip/Magisk-v23.0.zip

If you gets device certification error follow this post:

How to Fix the "Device is not Certified by Google" Error

Are you having trouble with signing in to your Google account? Can't access the Google Play Store or use Google apps like Gmail, Maps, Play Music, or Photos? Seeing a "device is not certified by Google" error? Here's how to fix that.

www.xda-developers.com

XZ file extractor android app:

GZ & XZ Extract - File Opener - Apps on Google Play

Archive extraction tool for all popular unix files: tar, gz, gz2, xz and other

play.google.com

Process :

1)Download all files given first extract xz file gsi file using xz extractor you gets img file.

2)Now transfer gsi.img, gapps and magisk file in tablet.

3)boot tablet to TWRP MODE

4)Now first select wipe >advance wipe>select system> slide

5) now go back click install click install img you will see your file click on it and select system partition and enter.

6) now we have to install gapps but we need to first resize system partition so

First click mount and mount system Partation now go to wipe>advance wipe>select system >clcik repair >click resize

7)now click install and. Select gapps and flash.

8)now go back install magisk and hit reboot.

After reboot you may face device certification error so to solve this go to magisk and install magisk hide props configuration module and reboot your phone.

https://xdaforums.com/t/module-magiskhide-props-config-safetynet-prop-edits-and-more-v6-1-0.3789228/

Follow this video i will update thread soon

Android 11 Linageos 18.1

Android 12 lineageOS 19