I picked up a 2012 A7 during the week and when I connect my iPhone via the 30pin Ami lead and 30 pin to lightning adapter cable, the Ami says the source is unsupported. I checked an old iPod on the 30 pin lead to ensure the Ami port was ok and it worked. There seems to be a lot of stories on google of people with the same issue, but I couldn’t find anything on here. Apparently it may be related to ios11? Is there no cure for it?!