: Used to remove carrier locks (SIM-unlocking) or to enable hidden settings like manual frequency band selection. Where to Find Reliable Firmware Links
Your dongle will not flash unless it is in Qualcomm Emergency Download (EDL) mode. Zte Mf79u Firmware LINK
A global stable firmware (vB04 or vB05) is sometimes sought for devices that need to be unlocked from carrier restrictions like Jazz Pakistan. Troubleshooting Update Issues MF79U - ZTE - Support : Used to remove carrier locks (SIM-unlocking) or
Visit the ZTE Support Portal and select your region to find available software packages. Troubleshooting Update Issues MF79U - ZTE - Support
Flashing the wrong regional firmware (e.g., putting a European Vodafone build on an Asian unlocked dongle) will change your IMEI range or permanently disable LTE Band 28 (700 MHz).
use “firmware” from Blogspot, Mediafire, or “4g-router-modders.com”. 78% of those contain keyloggers disguised as ZTE Web UI installers.