Always check your current build number before attempting an upgrade.

: Newer versions protect your device from vulnerabilities and unauthorized access.

This is the most confusing area for users. The ZTE MF920U comes in three firmware variants:

| Version | Carrier | Changelog / Notes | |---------|---------|-------------------| | | Generic | Initial release | | B09 | Optus | Telstra VoLTE broken | | B11 | Telstra | Ethernet routing bug | | B15 | Global | Fixed VPN passthrough | | B18 | Rogers | Security patch + band 12/17 | | B20 | Unlocked | Last known stable |

As of 2025, the final official release is (Global) and A14 (Americas). ZTE has ceased active development for this model.

The ZTE MF920U is a flexible but carrier-restricted device. Firmware updates can either (like band selection, Ethernet routing) or remove them (carrier lockdown). Flashing generic firmware is possible but requires EDL mode and partition-level care.

Click on the button on the home dashboard or under the Device Settings tab. If an update is available, click Download .

To manage firmware settings, you must first log into the router’s web interface:

: Use the default password found on the sticker (often located inside the back cover or on the bottom of the device).

: Modified firmware versions like BD_MF920UV1.0.1B05_UNLOCK are often used by enthusiasts for carrier unlocking or fixing IMEI/TTL settings. How to Update Firmware Updates can be performed through two primary methods: ZTE MF920U/RU,MTS 835FT(Wisefone ZX297520V3) - 4PDA

: Advanced users can use AT commands via a terminal program (like PuTTY) to change IMEI, lock LTE bands, or perform other low-level modifications. For example, to lock the device to LTE Band 3 only, the command AT+ZLTEBAND=4,0,0,0,0,0,0,0 can be used.

Your (found on the device web dashboard) The original network carrier of your router