Connect the device to your PC via USB. Open to ensure "Huawei Mobile Connect - PC UI Interface" is visible under Ports (COM & LPT). 2. Preparation
Click or Start . Do not touch the cable or the computer during this time. The modem will usually blink or restart several times. 5. Verification
If the flash completes but you have no signal, your NVRAM might have been wiped. You will need a tool like DC-Unlocker to repair the IMEI.
Before attempting to flash a Huawei modem, you must ensure your environment is prepared. Failure to do so can result in a permanent "brick."
Often caused by trying to "downgrade" firmware on a device with security "Anti-Rollback" enabled.