I recently purchased a Plantronics 520 and is pairs to my Curve 8530 with no problem, but there is no sound from the BT itself, no tone, no voice, nothing.
Then a few hours later, it starts working again! A few hours later it stops working. I did get a message on the Blackberry that the "Contents Protection" needs to be deactivated, but there was no setting for turn on or turn off this function.:confused: