I may be wrong, but I have the feeling that Apple's soft update caused the issue. I left my iPhone to update itself overnight(iOS 16.1.1 (20B101)) and the next morning once I plugged in the USB cable everything went kaboom - no radio, no CarPlay, no chimes, no seat belt chime, nothing. The McIntosh's blue-backlit sound meters were moving but no sound was coming out from any of the speakers. I erased profiles, and countlessly reset the unit(VOL+TUNE buttons, incl. SETTINGS-RESET-RESTART RADIO) but the only sound I was able to get was the Waze speeding camera alert a couple of times and that's it. I have a friend who suggested disconnecting the battery for 5min and see if that'll fix the issue but hasn't tried that yet. Do we have Jeep Start specialists in here reading these posts?