I just got an Fidelio P8 and on my girlfriends iPhone and on my laptop the P8 crashes after like 30 minutes of playing (sometimes it takes longer or sometime even shorter). Before this the P8 works just fine.

It sound like just a static sound, like the P8 just closes the BT connection. I have to turn off the P8 and close all BT connections wait 30 seconds and then it works again, till it crashes again.

The P8 is plugged in with the AC adapter.
The P8 is in the same (small) room as the phone or laptop.

Is there some sort of firmware update I have the do or is this some BT time out thing I'm not aware of?