The most common method to update the ZTE MF79U is via the device’s web interface:
Best for: MF79U originally from T-Mobile (often labeled “T-Mobile 4G LTE Stick”). Zte Mf79u Firmware LINK
Best for: Devices locked to the Australian Telstra network. The most common method to update the ZTE
| Update if... | Do NOT update if... | | :--- | :--- | | The dongle doesn’t connect after trying everything. | Your device works perfectly (no benefit, only risk). | | You see “Invalid IMEI” or “No SIM”. | You are not 100% sure of the original carrier. | | A carrier technician specifically told you to reflash. | You have no backup device. | Zte Mf79u Firmware LINK
If your dongle is already bricked (not detected):