Back up your current settings, and take note of your device's original IMEI, MAC address, and serial number (located under the device cover). Step-by-Step Guide to Flashing ZTE MF79U Firmware

: You can verify the latest official releases by visiting the ZTE Support Center . 2. Official Firmware Update Methods ZTE provides two primary ways to update the : Over-the-Air (FOTA) and Manual/Offline updates. Method A: Online Update (Recommended)