Hello, yesterday I used Garmin Express to update the maps in my Nüvi 55. I need to use a SD card (which seems to be read correctly) for the upgrade. In any case, after the upgrade the detailed map had gone, and I was left with a generic no info map with just the largest highways. I tried to upgrade the map multiple times but no luck. Any idea what I should do to get back to a road map of some sort?
I am on a mac.
Cheers
F