px6 with the latest firmware. When I have youtube music videos running on the unit. Everything is fine. But, when restart the car. The Youtube video is going but there is no sound. I see a brief green warning at the bottom that says "off line". But, then after a couple seconds, it connects back up to my iphone hotspot and plays the videos without sound. I have to reboot the app and etc... Is there a workaround? Thank you