I updated it about a week ago and it went very smoothly! Follow the instructions and you should be all right.
The biggest improvement in my opinion is the ability to read .gpx file format that is the format readable by all gps machines. This means one can abandon the crappy Raymarine Voyager software and do my chartwork on Garmins Mapsource program. That was a huge improvement.
Tod
Mandolin, Bayfield 36 sailing out of Rock Creek.
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