Only flash firmware that matches your exact device's first 6 digits of the IMEI. Keep your original firmware backup.
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.
Unlock firmware is not the same as stock firmware (the official software from ZTE). Stock firmware re-locks devices or requires a carrier check. Unlock firmware bypasses that check entirely.
: If you encounter errors, perform a factory reset by holding the Reset button (found under the SIM cover) for about 5 seconds with a paperclip.
For advanced users: You can modify your own firmware to unlock the device for free using .
: Useful for remote setups where the device must stay online 24/7. ⚠️ Critical Vulnerabilities & Warnings
If you can edit the APN, see signal bars, and get an IP address – Your ZTE MF910 unlock firmware worked. No SIM lock message will appear.