Hi, finally got it work
here is my steps to get it works.
blackberry 8700 Tmobile, upgrade to os 188.8.131.52
Bluetooth GPS Noika LD-1W for $50
uninstall the google map 1.5.4
install the google map using Google Maps
which will NOT give you the GPS option.
so now I turn ON the BULETOOTH
uninstall the google map 1.6.1
reinstall the 1.6.0 from http://www.google.com/gmm/apps/v1.6....00_v4_1_L1.jad
with (google 1.6.0) the GPS does not work well, the GPS tracking sometime stop, and will not work in "direction" mode
with bluetooth still on, go to Google Maps
to get 1.6.1 and perform an overwrite install over 1.6.0
that it, I am using 1.6.1 with bluetooth gps with Tmobile 8700g
PS: both 1.6.0 and 1.6.1 WILL NOT turn off the backlight while GPS mode is on, which I think it is a very good hidden feature.
TO AVOID MY LONG STEP , TRY ENABLE THE BLUETOOTH WHILE YOU INSTALL THE GOOGLE MAP FIRST TIME FROM WWW.GOOGLE.COM/GMM
( no sure will works, but at least my instruction works for me.)