The cursor didn't move. The terminal was frozen.

This section provides a safe, reproducible method. Incorrect AT commands can permanently damage your modem. Proceed at your own risk.

via AT^CARDLOCK? . Do not guess codes if your remaining attempts drop below two.

To free the underlying hardware, the user must convert the dongle from HiLink mode to "Stick" or . Once accomplished, the Windows Device Manager exposes several virtual COM ports, enabling the terminal software to gain programmatic control. How to Install and Connect