Heres an update:

on my 8703 with a garmin 660, i have tried the following:

4.1 bberry software with garmin bluetooth 3.0 - no luck at all.
4.1 bberry software with garmin bluetooth 2.8 - pairs and sometime connects.

4.2 bberry software with garmin bluetooth 3.0 - pairs and nothing after
4.2 bberry software with garmin bluetooth 2.8 - pairs and nothing after
4.2 bberry software with garmin bluetooth 2.4 - wont even pair