After five days waiting, Apple got me two replacement APPs (stolen, lost, I still don’t know). Didn’t take my case with me to pick them up so did not find out until later that they would not pair with my phone. Well, they would, but only one by one. After a wasted hour chatting online and then considerable time in the Apple store, it became clear they had different firmware. I only had limited time so I left the store thinking I knew what I had to do. I cannot get the 2B576 bud to update to 2B584 so it matches the other one. So they are still just single AirPods right now. And I think there is new firmware out anyway. 2B588?