This is an old Go 520 which I probably last updated the map on about 4 years ago. He asked me to update it again, God only knows why cos his longest trip ever is to Coventry, 8 miles away roud: I installed TomTom Home on my pc but probably stupidly installed a software update and now I get a map error. "You cannot use this map on this device" United_Kingdom_and_Republic_of_Ireland_665 I can't get into the menu anymore, just this error. I tried restoring the backup but still get the error. Any advice greatly appreciated as always Okay, it appears that the installed map is no longer patched. The FastActivate.exe is dated 17.02.2013 so will need updating along with the map of course. I'm now trying to find which later maps are suitable for this model. Looks as though I need to join a gps forum. Really hate the idea of doing this just to get a download though, goes against the grain.