Thanks, as always, for your help. I guess I'm just puzzled as to why it used to say "Up to date" or "No updates available" (I don't remember which) when you tapped it, but now it does nothing - that's why I thought there must be a server-side error or something.
Hey Mark, I still have my 720. After several failed attempts at updating maps, it finally updated. But the problem that has made it unusable for the past several weeks is that it constantly reboots- it never gets beyond the opening screen with the yellow Pete. Do you have a fix? Or is it time to retire it? It also- when it was working- gets stuck between commands. Even the audio gets stuck.