After spending hours troubleshooting this on Windows 10 and 11, here is my honest review of the problem and the solutions that actually work.
Windows 10 and 11 aggressively block unsigned or modified USB serial drivers. Huawei’s older drivers (pre-2016) are often not properly signed.
Type the following command and press Enter: bcdedit /set testsigning on
: Ensure you are using a high-quality data cable, as some cables only support charging. If the device still isn't seen, check your "Test Point" connection on the motherboard to ensure it is properly grounded. Verification