To improve the software of the Linksys WiFi range extender, you will need to access the web management page on the Linksys re4100w setup page. Make sure that you open the Linksys web management page only on that WiFi device that links with the Linksys network. Now, look for the network administration option and then click on the software upgrade. Later, if you see the latest version of the software file then install it on your computer and laptop. In the end, restart the Linksys extender to complete the software upgrade process.