It’s a straight forward coding option not an adaption channel
I don’t remember the exact byte but I went into module 5F (headunit) and scanned through the coding options and there’s an entry for usb setup, it gives you a drop down menu with 3 or 4 options and one of them is for Apple connectivity/compatibility so I selected that and saved the coding and it all worked
I don’t remember the exact byte but I went into module 5F (headunit) and scanned through the coding options and there’s an entry for usb setup, it gives you a drop down menu with 3 or 4 options and one of them is for Apple connectivity/compatibility so I selected that and saved the coding and it all worked