Note: The Oppo F1s does not have an official Android 7.1.2 update. If you see "7-1-2" in file names, it usually refers to a custom ROM or a misunderstanding of the build number. Why You Need to Re-flash Oppo F1s Firmware
Disconnect the phone and power it on. Note: The first boot may take 5–10 minutes. 5. Troubleshooting Common Issues Oppo F1s Firmware Download 7-1-2
: The flash tool cannot read the scatter directory structure. Move the firmware files directly to the local disk C: root directory to shorten file paths. Note: The Oppo F1s does not have an official Android 7
Removing forgotten screen locks or FRP (Factory Reset Protection). the flash is complete.
When a green circle appears, the flash is complete.