If the firmware update fails or the router acts erratically, perform a hard reset by pressing the physical reset button on the back of the device for 10-15 seconds.
Enter the administrator username and password (found on the label under the router). Zte F680 Firmware
Before searching for a download, identify your current build: Connect your PC to the ZTE F680 via . Open a web browser and type 192.168.1.1 (default IP). If the firmware update fails or the router