I updated my 2011 basic Sync (no Nav) to v4.6 in Feb. Since then, Siri doesn't work and I can't use the microphone function to speak instead of type into the phone (for messaging or taking a note or anything else using iPhone apps). Sync voice commands still work and I can still pair the phone and make calls and listen to music and run nav programs from the phone. Only the microphone for Siri and entering text by voice doesn't work. Anyone else have this issue or know a fix?