Today, Pwn20wnd released a new version of his well-known jailbreak – Unc0ver v3.3.7 Pre-Release. He did announce this on his account. unc0ver version 3.3.7 can be used to jailbreak A7-A9(X) devices running iOS 11.0-12.1.4. But as it would seem, these releases weren’t bug-free, prompting Pwn20wnd to update unc0ver once again this afternoon to version 3.3.6.
07/19/2019 – v3.3.7 was released for production with the following changes:
Improve the reliability of the Sock Port kernel exploit on 4K devices
There are 2 installation methods: If you have a Mac – you can download this jailbreak from his official repository: https://github.com/pwn20wndstuff/Undecimus
or Follow the installation guide here(if you’d like to install it without a computer): https://appledigger.com/how-to-jailbreak-ios-12-12-1-2-install-cydia-on-iphone-6-6s-7-8-x/