Navigate to the Tools dropdown menu inside QFIL, select Partition Manager , locate the userdata partition, right-click it, and select Manage Partition -> Erase . Important Safety Warning & Troubleshooting
Choose the or Standard installation option as prompted. download firehose oppo a3s cph1803
With the Firehose tool installed, I launched it and selected the firmware file I had downloaded. The tool detected my Oppo A3s, and I initiated the flashing process. The tool began to write the firmware onto my device, and I waited anxiously for the process to complete. After what felt like an eternity, the Firehose tool finished the job, and my Oppo A3s rebooted. Navigate to the Tools dropdown menu inside QFIL,
This is exclusively for the OPPO A3s CPH1803 . Do not use it for CPH1853 (though they are similar, the firehose can differ). The tool detected my Oppo A3s, and I
Locate the two small gold contacts labeled as the on the motherboard (usually located near the SIM tray or eMMC chip shield).
: Ensure you have the Qualcomm USB Drivers installed on your PC. Enter EDL Mode : Power off your device completely.
Without these drivers, your Windows PC will see your bricked phone as an "Unknown Device." Windows 7, 8, 10, 11 (32-bit & 64-bit) 3. Flashing Tools