I just discovered my old 720 in a draw and decided to see if it still worked, all these years later.
It did and the battery still works and so do the maps.
But then I (foolishly) updated it from TomTom home.
Now I get the dreaded "Problem with map, you cannot use this map......"
I had a back up and copied over all the backup files to the TomTom, overwriting all files - no ...