Oppo A53 Firmware Flash File [exclusive] Link

For the most stable experience, you can use official tools like the OPPO System Upgrade Tool or ColorOS Assistant if your device is still functional enough to connect. OPPO Software Update : Step-by Step Guide

firmware matching your model number (e.g., CPH2127 or CPH2139).

Once the flashing process is complete, reboot your Oppo A53.

Install the included in the firmware package or driver folder. This is essential for the PC to detect the phone in "EDL Mode" (Emergency Download Mode).