Therefore, custom ROM development for the SM-T210 peaks around Android 4.4.4 (KitKat) and Android 5.1.1 (Lollipop). While these versions are also older, custom implementations run significantly faster than the original stock firmware and offer vastly improved app compatibility. Essential Prerequisites

Boot your tablet into TWRP Recovery ( from a powered-off state). Inside TWRP, select the Wipe menu, then tap Advanced Wipe .

With a properly tuned custom ROM (e.g., OmniROM 4.4.4 + Greenify + a lightweight launcher like Nova Prime), the SM-T210 can still perform basic tasks: