Hi , bought grom in my car (volvo xc90) 3 years ago. With music via usb flash drive wasnt never problem. But if i want use my previous phone ( HTC ONE m7) was the problem, aalinq worked only sometimes, I had to experiment with usb toggle and sometimes succeeded. I thought it was an error htc. But now I bought samsung note 3 and It does not work at all. I tried other smartphones - Iphone 6 plus, note 4..... tried all options - usb debugging on- of, turn on-turn off thousand times, always newest firmare, also tried usb audio per usbconfig file and nothing helps.
Please what should i do? Where can be a problem, though earlier it sometimes succeeded but not now? I'm disappointed, i wanted usb audio, but can only use flash drive :(
Thanks for help