Instead of risking brick with unofficial “unlock firmware”:
Example AT commands for MF910:
AT+ZSNT=0,2,2 (force LTE only)
AT+ZGAON=0 (disable auto band)
AT+ZBAND=3,0,200000 (set LTE band 3)
In the early days of the MF910’s popularity, forums were ablaze with a specific solution: flashing a generic, "unlock" firmware. zte mf910 unlock firmware
The theory is simple. If the current software checks for a specific carrier, replacing the entire software with a version that doesn't check removes the restriction.
This process, however, was not for the faint of heart. It required specific software tools, often leaked proprietary utilities used by ZTE engineers or service centers. The most common methods involved putting the device into a specific "Download Mode" (often requiring a needle to press a hidden reset button while powering on) and using a PC to overwrite the flash memory. Example AT commands for MF910: AT+ZSNT=0,2,2 (force LTE
When successful, the result was magical. The router would reboot, accept any SIM card globally, and the web interface would often change—sometimes to a cleaner, generic ZTE layout, free of the carrier’s bloatware and logos.
The story usually begins the same way. A user holds a small, sleek white device in their hand—a ZTE MF910. It’s a capable little 4G MiFi router, known for its decent battery life and compact design. But there is a catch. When the user inserts a SIM card from a carrier other than the one the device was branded for, the screen lights up with a dreaded prompt: "SIM Lock Detected." Start the flash: Click “Start” or “Download
For the technically curious, this moment sparks a journey into the underground world of firmware modification.
For carrier SIM unlock:
Firmware change is not required for standard SIM unlocking.
Your PC needs to talk to the MF910’s internal modem.