Ensure the computer is connected to the router with the Ethernet cable supplied.
From the computer, launch an internet browser then navigate to http://192.168.0.1.
If requested (after clicking an option), enter the Admin password then click Sign In.
The router home page displays.
From the router home page, click Settings.
From the Settings page, click the Device tab then click Software Update.
If you don't see the 'Device tab' option, you are on the most recent software version and any updates are automatically delivered to your router.
If an update is available, follow the onscreen prompts to install.