During the manual method of Firmware update, a user has to visit the Download center of ASUS to install the latest firmware for the router. You can also download the latest software or user manuals from the ASUS Download center. Make sure to keep the downloaded firmware file in an extracted form. You can extract a zip format file with the help of a Windows extractor or WINRAR. An extracted firmware file gives convenience to users during the upload process of the router.asus.com interface.