Select and wait for the device to reboot and complete the process. Method 2: Recovery Mode (Cleanest) Turn off your Oppo F3.
Nougat’s improved "Doze" mode helps save juice by limiting background activity when the phone is stationary. oppo f3 nougat 711 official update download top
This usually happens if the file is corrupted. Try redownloading the package using a stable Wi-Fi connection. Select and wait for the device to reboot