I have read these forums for no lie at least 6 hours before purchasing my f900bt and I have to say I have no problems what so ever. I am using the 2.0 firmware, I touch first generation with 2.1 software with ipod cable, xm radio, sd card, custom splash screen and full blue tooth sync and contacts with my blackberry 8830.
Its currently in a dodge magnum and fits near perfectly.
These forums can be very negative so I would like to shed a ray of hope to any future buyers.
Have a nice day