⚠️ Do not select Format All + Download or Firmware Upgrade . Doing so will erase the unique security partition containing your IMEI and serial numbers, causing permanent network signal loss.
: Forcing the device into a low-level flashing state using the Test Point method (shorting CLK to GND) or by holding both volume buttons while connecting to a PC. Essential Tools for Flashing To use these custom files, you typically need: oppo f9 oppo custom file hot