Router software?
There isn’t any real software needed on the PC to setup a router.
You can setup the router by connecting the eternet from the computer to the router then goto this site in IE… http://192.168.0.1 password should be “admin” for default, if not reset the router, there should be a pinhole on the back, gotta hold that down with a paperclip until the lights reset.
The only real downloads for routers are firmware updates, which if it ain’t broke don’t mess with it 