If your PC doesn't recognize the dongle in download mode, install Huawei USB drivers:
Firmware is the software that runs on the hardware, controlling its features and security protocols. Maintaining the manufacturer's official firmware is important for several reasons: e8372h-608 unlock firmware
For the E8372, “unlock firmware” is an official Huawei release. Instead, it is a modified or repackaged firmware image that: If your PC doesn't recognize the dongle in
Ensure you are using a direct USB port (not a hub) and that the FcSerialDrv drivers are correctly installed. e8372h-608 unlock firmware