: Power off the phone. Hold the Volume Up + Down buttons while connecting the USB cable to enter the flash mode.

Before attempting risky firmware modifications, you can check your device's basic software status by dialing in the phone dialer to access the OPPO Engineer Mode/Toolkit

This firmware is rarely found on official sites like oppo.com. It is hosted on GSM forum repositories (like GSMHosting, easy-firmware, or specific firmware selling sites).

Thus, means disabling the system’s ability to download or install new updates. This is often done by:

Any unauthorized modification to the system firmware will immediately void the manufacturer's warranty. OTA Update Issues:

Altering system partitions usually voids any remaining manufacturer warranty.

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