At first, download the newest firmware update file from the Netgear support website. Connect a PC with the extender network. Go into the browser, search the routerlogin.net and reach to the login page. Enter the admin username and password to access the interface. Go into the firmware tab and paste the Firmware file here. To update the device, click Install button. https://nighthawk-setup.net/nighthawk-setup-made-easy-step-by-step-installation-guide/