Never attempt to upload a .upd firmware file over Wi-Fi. If the wireless signal drops for even a microsecond during the flashing process, the partition table will corrupt. Connect your computer directly to one of the LAN ports of the ZTE F670L using a Cat5e or Cat6 Ethernet cable. 3. Backup Your Configuration
In the Firmware Upgrade section, click the or Choose File button. zte f670l firmware update upd install
Type the default IP address for the ZTE F670L into the address bar: 192.168.1.1 (or 192.168.0.1 depending on your ISP configuration) and press . Never attempt to upload a