Insert a "foreign" SIM card (from a different carrier) and plug the modem into your PC.
The good news is that unlocking your E173u-1 is a well-documented process with a high success rate. Several methods have been developed over the years, ranging from simple code entry to more advanced firmware flashing. We will cover the most popular techniques, including code calculation tools, professional software like DC-Unlocker, and hardware solutions like the Octopus Box.
: Custom operator firmwares are notorious for memory leaks and frequent disconnections. Generic global firmware optimizes stability. Technical Specifications Checklist
: The software cannot see the modem. Unplug the device, restart your PC, swap USB ports, and ensure the Huawei drivers are properly installed in your Windows Device Manager.
Disable antivirus software temporarily, as it can block the flashing tools.