Unc0ver jailbreak adds support for A12 & A13 devices running iOS 14.6-14.8 in latest update
You can now jailbreak iOS 14.6-14.8 with A12 & A13 support using Unc0ver. Get it from www.Unc0ver.dev and install through Alt Store for no revokes 🎉 : r/jailbreak_
How to install Unc0ver 8 to Jailbreak iOS 14.6 to iOS 14.8 on A12 & A13 devices|Easiest Tutorial - YouTube