If you can tell me the (e.g., WMPT, GTMU, UMPT) and which Windows version you are using, I can give you more specific driver installation instructions or debugging commands. Share public link
In some legacy configurations or specialized firmware setups, it may appear as a Huawei Mobile Connect - Control Interface (COMx) . Verifying IP Connectivity (The Local Maintenance Subnet) The BBU3900 communicates via a predefined local IP address. Open the command prompt ( cmd ) on your laptop. bbu3900 usb driver
: Restart Windows in Disable Driver Signature Enforcement mode. To do this, hold the Shift key while clicking Restart, navigate to Troubleshoot > Advanced Options > Startup Settings > Restart , and press 7 or F7 . Reinstall the driver once the system reboots. If you can tell me the (e
Open the Windows (Press Win + X and select Device Manager). Expand the Network Adapters or Ports (COM & LPT) section. Open the command prompt ( cmd ) on your laptop
Select , point the path to your extracted Huawei driver folder, and click Next .
Always close the WebLMT connection or terminal tool software before physically unplugging the USB cable from the UMPT module to avoid corrupting running database logs.