I don't really know how I deleted the default map (Europe I guess, since I'm from France), but the fact is that I did. I didn't find the way to get this map installed back? On Garmin Express in "Tools and content" and "Bought" (I'm not sure about the wording, I'm guessing from the french interface) there is nothing. Which is understandable, I didn't buy them specifically.
How could I do?