Install and launch the QFIL Tool (usually found under C:\Program Files (x86)\Qualcomm\QPST\bin\QFIL.exe ).
A Windows PC and a high-quality USB cable. Necessary Downloads Oppo R9s Plus Oppo R9s Plus Firmware Qfil
These allow your PC to recognize the phone in Emergency Download (EDL) mode. Install and launch the QFIL Tool (usually found