Before any terminal software can work, your PC must recognize the modem’s diagnostic port (often COM3, COM4, etc.).
This section provides a safe, reproducible method. Warning: Incorrect AT commands can permanently damage your modem. Proceed at your own risk. Huawei Modem Terminal Download
This is the most popular lightweight tool for sending AT commands. Before any terminal software can work, your PC
| Goal | Method | |------|--------| | Backup config | Web GUI → Backup | | Logs | Web GUI → Maintenance → Logs | | Firmware file | Not downloadable from modem – must get from Huawei support site | | SMS / contacts | Web GUI → Message / Phonebook → Export | | Custom files from modem’s filesystem | Requires telnet + USB mount or binwalk firmware extraction (offline) | Proceed at your own risk