I use the 8100 and have Pro Sat Nav in my E92 with the Bluetooth etc and it works just fine.
But then, my Blackberry is for personal use and, unlike my work mobile, doesn't have many contacts so perhaps size is the issue that earns the BB limited functionality?
1. BMW E85 Z4M 2008
2. BMW E91 325i SE Auto 2007
BMW E92 335i SE Manual 2006