Flash Oppo A57 Via Sd Card Work !!link!!

The first boot after flashing may take longer than usual as the system initializes.

: Tap "OK" to begin the installation. Wait for the progress bar to finish; this may take about 10 minutes. 4. Finalise and Reboot flash oppo a57 via sd card work

Visit Oppo's official support center or search for "CPH1701EX firmware ColorOS 3.0". The first boot after flashing may take longer