What should I do to have good detailled map installed on my GPS via my Mac.....???
To show the difference between both.
Map quality with BootCamp working with my ''track'' shown:

Much better with MapSource but cannot connect with Aera 500:

I just tried all of the 3 USB port of my Mac without any success. I also deleted and reinstalled ''Usb drivers'', ''garmin Connect'' and ''WebUpdater'' from garmin's web site.
Still not working.......