What version of maps do you have? The latest is European PREMIUM 2012.
I've just updated my 2011 maps to 2012 which I did myself. The dealer charges a few hundred quid but you can dowload the DVDs for free (3 of them) and then pay about $50 USD for the chassis-specific activation code.
I'd imagine you have the 2012 version anyway going by the build-date.
Current: 2014 F31 320d M-Sport, Professional Media, Visibility Pack, Reversing Camera, DAB
Previous: 2013 F10 520d M-Sport, 2011 F10 520d M-Sport, 2008 320i M-Sport Coupe, 2002 325i, 2001 318i valvetronic, 1998 318i, 1996 525i, 1990 Porsche 944S2