I've downloaded the unlocked version of europe 2011a which links to "http://www.relink.us/view.php?id=2d9fed404e7659d3542ae24bea0264" for the rar files and expanded these into a folder showing an gmapsupp.img file of 1,940,384KB, read me.txt and a jpeg of europe.
A friend of mine tried a copy of this img file on his NUV250, copy all his files first from the device for safety onto his PC. Deleted the existing img file, then loadied the new file direct onto the ...