He has built , based on Android 12 Go Edition. It has no Google Play Services. No Facebook blobs. No Samsung Knox. It is 347 MB of pure, lean performance. The kernel is trimmed to run on a single 1.2GHz Cortex-A9 with 1GB of RAM.
Boot into TWRP recovery by holding Power + Home + Volume Up. custom rom for samsung galaxy tab 3 smt211 updated
Most newer builds (Android 9+) for this specific model are Unofficial or Beta . You may encounter "Force Close" errors on certain apps or issues with specific sensors like GPS. He has built , based on Android 12 Go Edition