For thread completeness (and because I just updated my maps):

You can update to the 2008 maps on the N770 Navicore 2007 by downloading them directly and unzipping them onto your memory card from the following page:

http://www.navicoretech.com/Consumer...B/wfnavigator/


Also, don't forget to update your software from this page (the update program didn't advise me there was an updated version of the software):

http://www.navicoretech.com/Consumer.../en_GB/tablet/

Interestingly there appears to be some differences between the English voice files on the above software compared to what came on the packaged DVD - they have a higer version number, are more compressed and some voices appear to have extra files whilst others don't.