ZTE MF920u routers utilize different internal chipsets depending on their manufacturing year and regional variant (e.g., standard MF920u vs. MF920u-1). Flashing the wrong firmware variant will corrupt the partition table. Step 1: Identify Your Current Build
: If the router fails to boot properly after a firmware change, it means the firmware version was incompatible with your hardware revision. You must find an older, stable factory firmware version and re-flash it using EDL mode. Zte Mf920u Firmware
If you are trying to unlock a specific version (e.g., MTS or Megafon), let me know which carrier it's from so I can help you find the correct, specific firmware update file! MTS or Megafon)