Brom Mode requires stable power. A completely drained OPPO may fail to enter Brom Mode. Charge for 30 minutes or connect a lab power supply to the battery terminals.
: Completely power off the device. Press and hold Volume Up + Volume Down simultaneously, then connect the phone to a PC via USB. oppo brom mode work
Locate TP_KCOL0 and TP_KROW0 near the MT6765 chip. Short them with tweezers. Brom Mode requires stable power