Disconnect the modem, reinstall the Huawei USB drivers, restart your PC, and try a different USB port.
Carrier-locked dashboards (like Safaricom or MTN software) will still refuse to build connection profiles for external networks. To fix this, flash a generic dashboard like immediately after the firmware update completes. Troubleshooting Common Flashing Errors Huawei E173u-1 Unlock Firmware
Use a desktop PC or a laptop plugged into a wall outlet. A power outage mid-flash will ruin the device. Disconnect the modem, reinstall the Huawei USB drivers,
: Use any local or international GSM SIM card. Disconnect the modem