The updated iPhone jailbreak utility Unc0ver 6.0.0 supports jailbreak from iOS 11 to iOS 14.3, iOS 14.4 does not.
A team of experienced Apple mobile platform hackers Unc0ver has released a jailbreak that works on iOS 14 to 14.3 with support for all iPhones with this OS version - from the “ancient” iPhone 6s to the latest iPhone 12.
The author of unc0ver explained that the new version of the utility uses a proprietary exploit based on the CVE-2021-1782 vulnerability. With its help, it turned out to achieve the optimal speed and stability of the jailbreak.
For Apple smartphones, on which users have already installed iOS 14.4, released at the end of January, the new jailbreak solution will no longer work. Unfortunately, there is currently no way to "rollback" from iOS 14.4 to older OS versions, since Apple has already stopped signing iOS 14.3.