Palm Treo 700w / 700wx

I've had the Treo 700W and now the WX. Since the time I purchased my CoPilot 6m, I've been able to use my blue tooth headset and Navigation at the same time. I did the most recent update from Palm website and now I can't do both at the same time.

Has anyone been able to use two Blue Tooth devices at the same time???

Thanks,