If the device appears in Device Manager with a yellow exclamation mark, right-click it, select Update Driver , and point it to the folder where you extracted the Mobile Partner files. 3. Fixing Connectivity Issues

Troubleshooting Your Huawei E3531 : How to Download and Install Drivers Finding the right drivers for older hardware like the Huawei E3531

If your modem is recognized but won't connect, particularly after a Windows update (like the Fall Creators Update), you might be facing a known compatibility bug.

If the built-in installer fails or isn't appearing, you may need to manually update your drivers. Users on the Microsoft Learn community suggest the following steps for tricky installations on modern Windows versions:

Look for a "customized" or universal version of Huawei's Mobile Partner software. Use Wi-Fi during setup:

SIM unlocked, external antenna connector, and compact 30g design.