Here is a comprehensive guide on why this happens and how to resolve it. What Causes This Error?
If your phone still boots into the operating system but throws this error whenever you try to trigger Fastboot, you must use the official channel. the serial is not match fastboot unlock verify fail oppo
The serial number embedded in the unlock code you provided does not match the serial number physically stored on the phone’s secure partition (EFS/ Persist). Here is a comprehensive guide on why this
To bypass or resolve this error, use one of the technical strategies outlined below. 1. Use BROM Mode Instead of Fastboot the serial is not match fastboot unlock verify fail oppo