E60 2007 Bluetooth no sound

[ZaKaS]

Hi, maybe someone knows how to fix it. My problem is- I can easily connect my phone, my girlfriends phone (both android) to cars bluetooth, iDrive shows contacts, I can control everything true wheel buttons, make calls, answer calls but I cant hear anyone and nobody can hear me. Phone is set to bluetooth output. I tried forgetting phones in iDrive and in phone but still no luck. What I remember that when I bought car i paired my phone and it was working for few calls and sound stopped after I played with iDrive and sos button. Can someone tell me how to fix it, reset bluetooth module if it helps?