To check for new firmware and update your router, you have to connect your computer to your router with an Ethernet cable. Launch a web browser and enter routerlogin.net into the address bar. Now, for the Netgear wndr4500 firmware update, your router login window displays. Enter the router admin user name and password. The default user name is admin. The password is the one you specified the first time you logged in. Select ADVANCED > Administration or Settings > Administration. Select Firmware Update or Router Update. Click Check. The router searches for new firmware. If new firmware is available, click Yes. You can log in to the router using the username and password. You can use the Netgear wnr2500 manual as well since it is usually the same.