FWIW my G5 performed flawlessly with the Rockrock BT adapter and JBL Flip speaker prior to the two most recent firmware updates. I confirmed it by reverting back - no beeps at the beginning of transmissions. I would have left it but that was before they fixed the priority interruption when the priority box wasn't checked problem.
That gives me some hope. I bought one of those Rockroc adapters recently based on an old post of yours, but was disappointed to find that it too had the beeping problem. I liked the Rockroc though. It would be the perfect solution for getting audio from my G5 into my car stereo via the AUX jack. But for now it's just another beep monster. Let's hope they address this in the next firmware.
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