just download iOS 16.4 and create new simulator iPhone 8 plus and it will select iOS 16.4 automatically, thats all.

in xCode, go to Product > Destination > Manage run Destination Click on Plus button and select OS version > Download more Simulator Runtimes Add new iOS and and start download iOS 16.4 last thing just add new iPhone 8 plus and it will select iOS 16.4 automatically