Official instruction for installing iOS 17.0 beta 2 and visionOS 1.0 in Xcode 15 beta 2

I downloaded the simulators, opened the DMGs, and copied them to the library. Then I start Xcode and it enters an infinite loop of "Cannot open because unverified...". I keep pressing "Open Anyway" in the Settings app, it keeps telling me "Cannot open because unverified blah blah...".

I tried following the hints in this thread (https://developer.apple.com/forums/thread/732324) but no luck, I only wasted hours of work

So, Apple, how to install visionOS 1.0 in Xcode 15 beta 2, such a way that it works??