When Pwn20wnd released unc0ver v5.0.0 on Memorial Day weekend with support for iOS and iPadOS 13.5, it took the jailbreak community by storm. Not only was the firmware still signed at the time of release, but the exploit went unfixed for quite a long while after before Apple finally patched it in iOS and iPadOS 13.5.1. Just yesterday evening, Apple officially stopped signing iOS and iPadOS 13.5, a move intended to prevent jailbreak hopefuls from downgrading to a pwnable firmware.
But for those who accidentally (or intentionally) updated and now regret it, there's still hope, as unc0ver project lead developer Pwn20wnd updated the jailbreak tool to version 5.2.0 on Tuesday with novel support for iOS 13.5.5 beta 1, along with some other important improvements: