checkra1n ☆

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Description:
Jailbreak for iPhone 5s through iPhone X, iOS 12.0 and up

Type: Cask | Latest Version: 0.12.4@0 | Tracked Since: Dec 17, 2025

Links: Homepage | @checkra1n | formulae.brew.sh

Category: Security

Tags: jailbreak ios checkm8 security exploit mobile

Install: brew install --cask checkra1n

About:
checkra1n is a pioneering jailbreak tool leveraging the checkm8 bootrom exploit to provide read/write access to iOS devices. It supports a wide range of older Apple devices from iPhone 5s to iPhone X on iOS 12 and newer. Its primary value is enabling deep system customization and unsigned code execution on hardware that is no longer signed by Apple.

Key Features:

Bootrom-level exploit (checkm8) for unpatchable hardware-based access
Supports iOS 12 through latest versions on A5-A11 devices
Cross-platform compatibility (macOS and Linux)
Safe, non-destructive process that does not erase user data
Open-source with active community development

Use Cases:

Installing custom iOS themes and system modifications
Accessing the filesystem for advanced backups or forensics
Running unsigned applications and emulators

Alternatives:

unc0ver – Userland jailbreak for newer devices (A12+), patchable vs checkra1n's hardware exploit
palera1n – Checkm8-based jailbreak focused on newer iOS versions and rootless implementations

Version History

Detected	Version	Rev	Change	Commit
Aug 24, 2025 8:51pm	0.12.4	0	VERSION_BUMP	9084f98b
Jun 27, 2023 6:01pm	0.12.4	0	VERSION_BUMP	887ca3ff