for installing hci tools :
http://www.internettablettalk.com/fo...d.php?p=151336

edit file /etc/bluetooth/rfcomm.conf by rfcomm commands output:

rfcomm0 {
bind yes;
device 00:00:00:00:00:00; #your gps mac address here
channel 1;
comment "BT GPS";
}

http://www.labri.fr/perso/barrere/gpsBTLinux.html

however this don't solve the issue : if connection is lost to the gps device, maemo mapper display a dialog box and don't retry to connect... I was expecting gpsd to reconnect... and maemo mapper to not know about the lost.