This is the safest method if your phone can still boot into Recovery Mode. Download the official firmware (Oppo Support or HardReset.info ) to your SD card. Power off the device. Press Power + Volume Down to enter Recovery Mode.
The firmware houses the processing algorithms for the 16MP front-facing camera. oppo a57 2016 firmware
: Since the 2016 model uses a Qualcomm CPU, it is flashed using QFIL or similar Snapdragon-compatible tools. This is the safest method if your phone
Oppo’s OFP format is a proprietary container. Use: oppo a57 2016 firmware