thanks but i did a search thread for tomtom xxl 540 nothing comes up that link shows more of repairs and quick fix this link=http://www.gpspower.net/tomtom-tutorials/250811-installing-maps.html
doesn't explain but more of an break down about maps.all i was looking for a simple steps back up your unit then download the map you want to use. then do you delete the map folder already on unit
and move the new map folder to were you deleted old map then install program to activate new map.?
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