Type fastboot oem unlock (or fastboot flashing unlock for newer Android versions) to unlock. Confirm on the tablet screen. Step 2: Install TWRP Recovery Download a compatible TWRP image for the A3 10. In Fastboot mode, type: fastboot flash recovery twrp.img Reboot into recovery mode. Step 3: Flash the Custom ROM (GSI) Download the . In TWRP, perform a Wipe (System, Data, Cache). Choose "Install" and select "Install Image".
, it predates "Project Treble" (which started with Android 8.0). This means it cannot easily run GSIs, which are the modern way to install custom Android versions on less popular hardware. Viable Alternatives to Custom ROMs alcatel a3 10 custom rom
Select Install , choose the ROM zip file from your SD card, and swipe to flash. Install GApps: After the ROM, flash the GApps zip file. Type fastboot oem unlock (or fastboot flashing unlock
Once the flash completes, use the physical volume keys on the tablet to select "Recovery Mode" and press the Power button to boot directly into TWRP. Step 3: Wiping the System Partitions In Fastboot mode, type: fastboot flash recovery twrp