The official checkra1n 0.12.1 beta was never natively released for Windows; it is officially only available for
(Always cross-reference with community threads.) checkra1n 012 1 beta windows download portable
Officially, the checkra1n team (the Corellium team) does not provide a native Windows executable. They recommend using a bootable Linux USB or a macOS virtual machine. However, for the average user, dual-booting or running a VM is inconvenient. The official checkra1n 0
iOS 14 Support: It enabled jailbreaking for A9(X) devices (like iPhone 6s and SE) on iOS 14. Hold Power + Home (or Volume Down +
. Discovered by security researcher axi0mX, checkm8 is a permanent, unpatchable bootrom exploit targeting Apple devices powered by A5 through A11 bionic chipsets (stretching from the iPhone 5s to the iPhone X). Because the vulnerability resides in the read-only memory (ROM) allocated during the device manufacturing process, Apple cannot patch it via software updates. The Apple Wiki
Since there is no native Windows installer, the community uses "Live USB" methods. These are portable because they run entirely from a USB drive without modifying your Windows installation. 1. Use Checkn1x or Bootra1n (Recommended)