If you are using this modem with a 3G/4G router, such as those from ASUS , ensure the router's firmware is also up to date to support the modem's updated software. Huawei E1750 - Download Huawei Firmware Update Files Free

Ensure you are downloading the correct version for your specific hardware revision. Using firmware meant for a different model (like the E173) can cause permanent damage.

Standard USB 2.0 high-speed interface with an LED status indicator. Finding and Downloading Firmware Firmware for the