A couple of our supermods (Andy_P and Mikealder) are UK based. They normally check in here at least once a day and, most likely, will see your query and be able to respond appropriately.
We never had the 500 model here in North America and don't have experience with that device or maps sold on cards.
You need to use TomTom Home to purchase the new map and add it to your memory card, the device you have got can only use a card up to 2GB in capacity so I would suggest you get a new card and copy everything from the old card to the new card then add the USA map.
This should result in you having the UK/ European map on one card and the USA map on the other (handy for the drive to the airport) then simply swap out the cards. Be aware when you get to America it might take longer than normal to acquire a GPS position fix and the same when you return to the UK, this is normal - Mike
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments. After that, you can post your question and our members will help you out.