While holding the buttons, connect the phone to your PC via the USB cable.
The QFIL tool only works when the device is in , which allows the PC to communicate with the phone's core system. oppo a3s qfil firmware cph1803 qfil flash file link
Double-check that all paths are correct and the device remains connected in 9008 mode. Click the button in QFIL to initiate flashing. While holding the buttons, connect the phone to
The flashing process will begin. Do not disconnect the cable. While holding the buttons
Always scan the downloaded .7z or .zip file with antivirus before extracting. Ensure the package contains rawprogram0.xml , patch0.xml , and a firehose .elf file.