: Power off the phone and connect it via USB while holding the boot key.
For professionals, the CM2RDA module is the most stable. It can rebuild the security area of the phone without needing the original backup. Vital Troubleshooting Tips coolsand rda imei repair code best
The you see on your desktop software (e.g., "BootLoad Error" or "Timeout"). : Power off the phone and connect it
The IMEI is a unique number used to identify a device on a mobile network. When an IMEI is corrupted (showing as "null" or "invalid") due to a software flash or hardware failure, the phone cannot connect to a network. Technicians seek to restore this number to return the device to functionality. coolsand rda imei repair code best