I follow this steps but got stuck at step 3 as the device not show up in the list yesterday.
I did these.
update my visionOS
update my Xcode from 15.2 beta 1 to 15.3 beta 1 (latest one from developer.apple.com yesterday)
go to place with less crowded wifi (from Apple Park Visitor Center to Ramen Shop in the Marketplace on Steven Creek Blvd.)
And the device appear in the list but stuck with another problem - the provisional profile error
pichaya_TRYYS
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For the provisional profile problem I solved by Restarting Xcode, then, the error message changed and there the button to click to register device. after registering the device successfully I can follow the remaining steps and successfully run my app in the vision pro I bought from the store wirelessly successfully