Ensure your phone has at least 40% battery to prevent it from shutting down during the installation.
To ensure the update works, you must use the correct model-specific firmware. OPPO F3 (CPH1609) Version: Android 7.1.1 Nougat (ColorOS 3.1) download file firmware update oppo f3 nougat work
For a manual local update, users often look for the .ozip package (e.g., version CPH1609EX_11_D.01 ). Pre-Update Checklist Ensure your phone has at least 40% battery