The emulator ships with a formatted USB thumb drive pre-loaded with software which can be used to boot your CNC in case the hard drive fails, plus software to reformat and restore your hard drive.
If the original thumb drive is lost or damaged you can prepare a new one or order a replacement.

Zte Mf79u Firmware Link

Only download firmware from reputable sources to avoid malware. Ensure the firmware matches your specific hardware version ( BD_... ). Step-by-Step Guide: How to Flash/Update ZTE MF79U

For manual flashing or specific regional versions, these platforms host various firmware files: Zte Mf79u Firmware LINK

Most official ZTE update tools switch the device automatically. However, if you are using a tool like Miflash or QPST Tool : Plug the MF79U into the computer. Only download firmware from reputable sources to avoid