Hi Galadril,
Meantime I solved my problem, and my bluetooth works again .
But I used till the EU version 2.005000. I did the firmware update to version 2.00900 from Pioneer website, but after the installation "NO bluetooth version" displayed. I pushed the button on the screen "software update", and from SD card (3 file from the root directory) installed the bluetooth software successful. So i,am happy now, the bluetooth works well.
So unfortunately I can't help you Galadril.