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14 July 2012, 06:56
1. You need to install Home 2 found here: tomtom.com/home
2. Connect the 550 to the computer and make an Explorer, not Home, backup of the unit's contents. If not sure how, see here: [url=http://www.tomtomforums.com/t17864-how-backup-contents-your-unit-computer-how-restore.html" target=_blank>