Which are you using (Windows 10, 11, or macOS)? Do you already have the IMEI number ready?
: When prompted by the connection software, enter the generated unlock code to permanently free the device. If you'd like to move forward, let me know: Huawei E173u-1 Unlock Firmware
The is a popular 3G USB modem (stick), often branded by mobile carriers like Vodafone, T-Mobile, or Telstra. It supports HSPA+ (up to 21.6 Mbps down) and has a microSD slot. The “u-1” variant typically indicates a specific hardware revision or firmware region. Which are you using (Windows 10, 11, or macOS)
If your modem does not prompt for a code or has 0 attempts left, you may need to flash a generic firmware. Which are you using (Windows 10