Late 2020 / Early 2021 (still relevant as a legacy tool as of 2026) Developer: The checkra1n team (axi0mX, qwertyoruiop, et al.) Based on: checkm8 bootrom exploit (permanent, unpatchable by Apple for A5–A11 chips)
While the dream of a one-click native Windows version of checkra1n may never be realized, the existing solutions — bootra1n, WinRa1n, and Palera1n — provide Windows users with excellent alternatives that unlock the same powerful checkm8-based jailbreak capabilities. For owners of A5 through A11 devices, the ability to jailbreak iOS 12 through iOS 16 (and in some cases iOS 17) remains not just possible, but straightforward and dependable.
Checkra1n 0.12.4 was never officially updated for iOS 15+, but the checkm8 exploit still works. For iOS 15–16 on A11 devices, the community now recommends , a fork of checkra1n with SEP (Secure Enclave) mitigations. Palera1n also has Windows support. checkra1n 0.12.4 beta windows
This specific version was notable for several stability fixes and hardware support updates: A11 Support
Released on June 11, 2021, version 0.12.4 was primarily a maintenance update. Late 2020 / Early 2021 (still relevant as
The Ultimate Guide to checkra1n 0.12.4 Beta on Windows The checkra1n jailbreak is a milestone in iOS modding. It uses the unpatchable checkm8 hardware exploit. This exploit affects Apple A7 through A11 devices permanently.
: Version 0.12.4 resolved many "Error -31" and "Error -20" issues that plagued earlier 0.12.x builds [5.1, 5.5]. Semi-Tethered : If your phone dies or reboots, you For iOS 15–16 on A11 devices, the community
Insert your USB drive, select it from the dropdown list, and click "Start Making."