I have version 1.5 apparantly by looking into my router. When I look for a download for it I can not find it on this website. So I tried downloading version 1's firmware upgrade and then I read the readme file and it says to look for a file that ends in .rmt That file isn't in there. There's another rather large file in there but that won't upgrade the router, it keeps saying "upgrade failed". That file is a bin file, and it doesn't work. What do I do to upgrade this router?