SO: I did a factory reset on both headsets, reloaded latest (last week's) firmware. Paired BT to bike successfully and bike audio comes to headset properly. Paired my unit with iPhone to adjust settings. When I turn them on, I get the DMC intercom connected message but the DMC intercom will now not activate at all. Checked all cable connections etc. Also, the "Hey Cardo" feature does not work. I'm about ready to throw in the towel, send the units back (Amazon return window), and get another set.