Maintain at least 60% battery life to prevent the phone from powering off mid-process.
Go back to the main menu and select > Format Data . Type yes to confirm. This removes encryption conflicts. Finally, select Reboot > System . The first boot may take up to 10 minutes. Risks and Troubleshooting Oppo A9 Custom Rom
After successfully booting into your new ROM, you may want to gain root access for advanced customizations. The recommended method is : Maintain at least 60% battery life to prevent