I just did the map update. Found the map on the e90postforum. Map 2013 1A Copied to a 32g USB card. Installed using usb port in glove box. Got Activation code from
***************** Took about 1 hour.
2011 BMW 528i Build date 02/2011
Map
http://www.e90post.com/forums/showth...=772078&page=3
updated from 2011 to 2013 1A North American Premium
You can buy the tomtom version sent via email. Cost a lot more. Did my update for under $100.
You can do the update while driving around. I just hooked up a 10amp battery charger.
Good luck