You must flash Team Win Recovery Project (TWRP) using Odin on a PC to install the ROM files.
The most popular choice for the SM-T285, this ROM is based on Android 7.1.2. It offers a clean, near-stock Android experience and is significantly faster than the original TouchWiz software.
The Samsung Galaxy Tab A 7.0 (2016), model , originally launched with Android 5.1 Lollipop, leaving many users stuck with outdated software that no longer supports modern apps. Fortunately, you can breathe new life into this tablet by installing a custom ROM based on Android 7.1 Nougat .
Essential for flashing any custom recovery or ROM.
Always perform a full backup in TWRP before wiping your device, as this process will erase all data. How to Install Android 7 on SM-T285 Sm T285 Custom Rom Android 7 Free |link|