WinRa1n 2.1 for Windows is a jailbreak tool for iOS 12 – iOS 16 implementing checkra1n 0.12.4 and checkra1n 0.1337.1 as the main engine to WinRa1n is an iOS 12 to iOS 17 jailbreak software for Windows users that works for all devices running A7 - A11 chips. WinRa1n is based on the checkM8 exploit