In March, 2010, I purchased the map update service for my TomTom One. In June the TomTom One hardware failed, so I bought a new One (which by the way I really like), I just attempted to download the new map that just became available, but nothing showed up as available in Home. Contected Support via phone, was told that TomTom refuses to transfer my update service to a new device. THIS SUCKS! Especially since this only occurred because the old unit had failed.