Download your current config.bin file from the management page so you can restore your settings if needed.
Updating firmware carries a small risk; if interrupted, it can "brick" your router. zte f670l upgrade firmware portable
Navigate to or Administration > System Management . Look for Software Upgrade or System Update . Click Check for Update . Download your current config
The ZTE F670L generally supports two methods of upgrading: Online and Local (Offline). To start any upgrade, you must log in to your router: zte f670l upgrade firmware portable
Open your browser and type 192.168.1.1 (default for most ZTE models).