Performing a Netgear firmware update resolves various issues of the router. Moreover, by upgrading the Netgear wndr4300 firmware, you can add new and advanced features to the router. Launch a web browser on your computer and navigate to the Netgear download center. Download the latest Netgear firmware update. Connect your computer to the router using an Ethernet cable. Open www.routerlogin.net. Enter the router login credentials and press Enter. Under the Administrator tab, click on Advanced. Click on the “Firmware Update” option. Click on “Upload” and select the downloaded file. The steps are often same for all the firmware updates. You can try it for netgear wndr3700 firmware update as well.