1-SD card up to 2 GB (great card your devices will not be able to see)
2-download-unpack and copy to SD card
[Only registered and activated users can see links. ]
3-put the SD card in the TomTom and TomTom start.If all right-that TomTom will see the SD card and write that no maps.
4-bear in mind, for each device you need a separate SD card