In TWRP, go to Wipe -> Advanced Wipe -> Select Dalvik, System, Data, Cache.
Because of these hardware limitations, there are no stable, official builds of modern operating systems like LineageOS 20 (Android 13) or newer for this specific model. Instead, development focuses on heavily optimized, debloated stock ROMs and experimental Android 7.1.2 (Nougat) or Android 11 (LineageOS 18.1 Go) source ports. Top ROM Picks for SM-T280 samsung galaxy tab a6 smt280 custom rom hot
Enabling "OEM Unlocking" can be tricky on the SM-T280. In some region-specific firmware versions, the "OEM Unlocking" toggle might be hidden or greyed out. To enable it, you must enable Developer Options, connect the tablet to a working internet connection (Wi-Fi), and wait for a few minutes for the toggle to become available. Some users have found that simply waiting or rebooting the device after connecting to the internet makes the option appear. In TWRP, go to Wipe -> Advanced Wipe
A stable connection is required to prevent data corruption. Top ROM Picks for SM-T280 Enabling "OEM Unlocking"