Never upgrade firmware over Wi-Fi. An interruption in the wireless signal can permanently corrupt the router's memory. Connect your computer directly to one of the ZTE F680’s LAN ports using an Ethernet cable.
Open your browser and go to your router's admin page (usually zte f680 firmware upgrade
Before updating, keep these crucial points in mind to avoid any issues. Never upgrade firmware over Wi-Fi
| Method | Best For | Difficulty | | :--- | :--- | :--- | | | A standard, straightforward online check for updates | Easy | | Manual via ISP | Updating when you have a file from your specific internet provider | Moderate | | Emergency Menu | Recovering from a failed update or a "bricked" router | Advanced | Open your browser and go to your router's
Do not turn off the router or unplug the power cable during the update.