In TWRP, tap and select Dalvik/ART Cache, System, Data, Cache.

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, the most reliable and sought-after custom ROM is . Because this device was never officially supported by the LineageOS project, all available builds are "Unofficial," maintained by independent developers on forums like XDA .

Force restart the tablet (Volume Down + Power) and immediately switch to Volume Up + Home + Power to boot into TWRP. Phase 3: Flash the Custom ROM

: Boot back into TWRP (Volume Up + Home + Power). Perform a factory reset, and re-flash the ROM file. Ensure the zip package downloaded cleanly without corruption.