to your extracted stock firmware folder and open the MT67xx_Android_scatter.txt file.
It acts as a bridge between the SP Flash Tool and the phone's security system. Oppo A37m Da File
While continuing to hold down the volume keys, insert the USB cable connecting the phone to your computer. to your extracted stock firmware folder and open
Because OPPO does not release official firmware in a format usable by SP Flash Tool (they only provide OTA zip files), technicians must rely on and a custom DA file to reflash the device. Oppo A37m Da File
The bypasses these security handshakes.