Oppo A9 2020 Firmware Better -

: For major version transitions (e.g., from Android 10 to 11), look for a "Trial Version" option under the gear icon in the top right of the update menu. 2. Local Update via Recovery Mode

: Check your hardware revision or PCB serial number by dialing *#888# in the dialer. 1. How to Update Firmware (OTA) Oppo A9 2020 Firmware