Ac8257 Firmware Work Site

– In recovery, select “Apply update from USB” or “System Update” . – Wait for the process to complete (do not cut power).

– If the system is unstable, wipe cache and perform a factory reset from recovery. Ac8257 Firmware WORK

The absolute best way to ensure the firmware works is to dump your current working ROM (if the unit still boots partially) using the adb pull command. – In recovery, select “Apply update from USB”