Unlocking is not without peril. The MF293N is a complex embedded system, and writing to the NVM partition is akin to brain surgery on a live patient.
This is the safest method as it doesn’t involve flashing risky files that could brick your device. zte mf293n unlock firmware
He wasn't looking for a simple passcode. He needed the unlock firmware—the digital skeleton key that would strip away the corporate branding and open the device to any frequency it could catch. Unlocking is not without peril