I have my Linksys WRT54GS v. 6 router, I am able to ping into it 192.168.1.1 returns no packet loss. I have a wired connection to it, but when using TFTP.exe to upgrade the firmware that is giving me problems, it fails every time. I am able to use the browser to access the web interface of the router. However, I can make changes but only some of them stick and the connection is on and off. Please help.