https://wccftech.com/apple-confirms-that-the-ios-13-5-1-update-kills-the-unc0ver-jailbreak/

Well, Apple has confirmed that iOS 13.5.1 and iPadOS 13.5.1 kills the Unc0ver jailbreak, according to the official security contents page of the update.

The jailbreak community suddenly became alive a few days back when Unc0ver was released with full support for iOS 13.5 and iPadOS 13.5. We saw a barrage of new tweaks being released, while some old ones even got a revision for 2020. But now, all that gravy train has come to a stop as Apple has killed the Unc0ver jailbreak completely with the release of iOS 13.5.1 and iPadOS 13.5.1 for both iPhone and iPad, respectively.