Huawei E173u-1 Unlock Firmware
Plugged directly into a USB port (avoid USB hubs).
Some updaters require a "Flash Code" (different from the NCK) to authorize the update. Huawei E173u-1 Unlock Firmware
Beware of scam sites charging $20 for free firmware. Trusted sources include: Plugged directly into a USB port (avoid USB hubs)
Which are you using (Windows 10, 11, or macOS)? Do you already have the IMEI number ready? Huawei E173u-1 Unlock Firmware