I’m on android and not seeing this issue but I also got the 4188 update today.
This is probably all related to the mess from a month ago.
This snafu cost me about 20 hours of testing. That’s ok as I was involved in the screwup (I missed the prerequisite) . I was seeing issues and the only way I cured them was to flash back to PR 3415, the latest PR for this camera.
My v4’s have been on this release since then except for one unit that updated to the latest PR 5332. 5332 is a slow rollout and so far only 1 of my 5 v4’s has updated.
I’m not sure why 4188 appeared today but I believe the OP as I updated also.
Hopefully this all sorts out and @h4rper gets his iPhone updated, maybe on PR 5332.