Flash Oppo A53 Via Unlocktool -

: If the buttons fail (common for hard-bricked devices), you must use the physical EDL Test Points on the motherboard to force the device into Qualcomm 9008 mode.

: Obtain the official stock firmware (OFP or scatter format) compatible with the device version. Step-by-Step Flashing Procedure flash oppo a53 via unlocktool