Huawei Modem Terminalexe Repack _verified_ -

AT^SYSCFGEX? Always keep a log of your original settings. To revert to auto-band selection:

Right-click Terminal.exe → Run as Administrator. You may see a warning about “Unknown Publisher” – that confirms it’s repacked. Click “Run Anyway.”

AT^SYSCFGEX="03",3FFFFFFF,1,2,7FFFFFFFFFFFFFFF,, A repacked TerminalEXE will accept this, while the stock version would throw “ERROR”. Verify with:

To lock your Huawei E3372 to LTE Band 3 only:

AT^SYSCFGEX? If you get a meaningful response (e.g., “2,3,4, etc.”), the repack is working.

Connect your modem. Open Device Manager → Ports (COM & LPT). Note the PC UI Interface (COMx) – this is typically COM3, COM4, or COM5. Some repacks auto-detect; others require you to set the COM port in config.ini .