You need version 2.7.496 or higher. Inside QPST is the QFIL executable.
If you own an Oppo R9s Plus and have run into a hard brick, bootloop, or software corruption, the is often the only way to bring your device back to life. Here’s my honest take after using it: Oppo R9s Plus Firmware Qfil
(based on Android 6.0.1 Marshmallow). While dated, it is stable and optimized for the device's 6GB RAM and large display. Fast Charging Support You need version 2