Undoes custom ROMs, custom recoveries (like TWRP), or root access to restore your warranty. Prerequisites Before Flashing
Once the tool detects the phone, a red progress bar will appear, followed by a yellow progress bar. You can now release the volume button. during this process. Step 6: Completion
You accidentally used "Format All + Download". Fix: Use Maui Meta Tool or SN Writer Tool to re-inject IMEI (printed under the battery or on box). Oppo F1s Mt6755 Firmware
Locate and launch the application executable named flash_tool.exe .
Have a unique issue not covered? Visit the Oppo F1s XDA forums – the developer community remains active even years after the phone’s launch. Undoes custom ROMs, custom recoveries (like TWRP), or
Ensure the phone battery is charged to at least 50% to prevent shutdown mid-flash.
Temporary disable Windows Defender or third-party antivirus software, as they frequently block flashing tools as false positives. Essential Downloads during this process
Note: Only select "Firmware Upgrade" if "Download Only" fails. Never select "Format All + Download" unless your device is completely hard-bricked, as this will erase your device's unique IMEI number. Step 4: Execute the Flash