Hi again and thanks for that information.
You should be able to purchase the ADDITIONAL (NOT UPDATE) maps you need at one of the following web pages. I say ADDITIONAL vs. UPDATE because the "Lifetime Map" "updates" that come with the device are ONLY for the original maps that came with it.
This is for Italy and Greece --> https://buy.garmin.com/en-AU/AU/maps/on-the-road-maps/city-navigator-europe-nt-italy-and-greece/prod8429.html
This is for all of Europe --> https://buy.garmin.com/en-AU/AU/maps/on-the-road-maps/city-navigator-nt/city-navigator-europe-nt/prod6299.html
Also, I would highly recommend that you purchase the pre-programmed memory card version of the maps, as they are VERY EASY to install (just insert the memory card and TEST. As an example, I have a link to a video that shows how to install and test a Europe map card on a similar unit to the one you have.
Click Here for Video --> https://www.youtube.com/watch?v=6kg7okIwRXY
I believe there is a "find dealer" button on each of those links to the maps above, and you may want to use that to see if you can purchase these pre-programmed map cards in your local area.
Please let me know what you find or if you have any more questions.
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Thanks, ***** *****