You cannot install a custom ROM using the stock Samsung recovery. You need TWRP (Team Win Recovery Project).
As of 2026, development for the SM-T280 has slowed, but stable builds exist. Because the tablet uses a , it is not as developer-friendly as Qualcomm devices. Nevertheless, here are the best updated options: samsung galaxy tab a6 smt280 custom rom updated
This guide provides a general outline for updating your Samsung Galaxy Tab A6 (SM-T280) with a custom ROM. Be sure to research and follow the specific instructions for your chosen ROM and recovery image. Good luck! You cannot install a custom ROM using the