This is not official software from Huawei. Official unlocking is typically done through your network provider.
Once the process is complete, restart the modem and try inserting a SIM card from a different carrier to see if it catches a signal. Important Considerations and Risks Huawei Modem Unlocker V.5.7.7 By Bojs 328
Hope this guide helps in unlocking your Huawei modem successfully! This is not official software from Huawei