We’ve always been able to downgrade to a recent iOS version by installing an IPSW file on an iPhone or iPad through iTunes for Mac and Windows, but that’s no longer possible in the latest iTunes 12.9 beta, distributed last week as part of the macOS Mojave 10.14.4 developer beta.
iOS 12.1 has already been out for a week, which means there isn’t much time left to downgrade to iOS 12.0.1. Given the potential jailbreakability of iOS 12.0.1, you should consider downgrading via iTunes.
Now that nitoTV has been released Apple TV jailbreaking is more powerful than it’s ever been. And with tvOS 10.2.2 still being signed, Apple TV 4 users can downgrade, jailbreak with greeng0blin, and experience it now. But should you?