Samsung Galaxy Tab A 8.0 (2019) receives a stable Android 11 update with One UI Core 3.1 | Updatify Now
For Samsung Galaxy Tab A 7.0 T280 T285 Motherboard T285 Main Board Support Wifi+sim T280 Panel Wifi Version Android Os - Mobile Phone Antenna - AliExpress
Samsung Galaxy Tab A 8.0 (2019) gets updated to Android 11 - SamMobile
Download and Install AOSP Android 10 for Galaxy Tab A 8.0