The same thing is happening for me I went to get my battery replaced on Monday and I tried to update to iOS 17.5 beta 1 after finishing it took ages to verify the update and it failed to verify than it said unable to verify update iOS 17.5 beta is temporarily unavailable. Please try again later I’ve tried it multiple times and nothing has worked I’m thinking of getting a MacBook to do the update via iTunes but I don’t know if that will work I just want to be able to update my phone