Check Device Manager. You should see (usually COMxx). Step 3: Loading the Bootloader
Once in download mode, you must use specific utilities to push a temporary loader and then re-flash the functional firmware. E8372h-153 Dead Boot Repair - 3.83.250.89 E8372h-153 Dead Boot Repair
If successful, the PC should detect a new device in "Device Manager" under "Ports (COM & LPT)" as HUAWEI MobileConnect - via PC UI Interface or similar. 2. Required Software & Drivers Check Device Manager