Double-check your IMEI sticker. Recalculate the code using a reliable calculator algorithm. Progress Bar Freezes
Re-check the IMEI and ensure you are using a correct calculator (v1 vs. v2). Modem not recognized: Reinstall Huawei drivers. Huawei E173u-1 Unlock Firmware
Your current (found in your modem dashboard settings) The operating system version on your PC Double-check your IMEI sticker
Carriers modify three components in the original Huawei firmware: unlike other models
was a stubborn beast; unlike other models, it required a specific "Unlock Firmware" to bypass the hardware restrictions. One wrong file and the dongle would become a useless brick.
A power outage during a firmware flash will permanently corrupt the modem.
I can provide the exact or APN configurations for your target network. Share public link