|In the routers setup, go to the site, where you can update the firmware, then use the browse button to navigate to the .BIN file, you've downloaded, select that bin file and press open.|
Then you should be able to update your firmware.
Also read the routers manual on howto update the firmware or your router or go to the Linksys support page and download the routers manual as a pdf file.
The original poster should always write the last response !!!
Let us know, if the problem is solved !!!