checkra1n

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

Get the beta now Preliminary support for iOS 14 - read the announcement

Latest Release

checkra1n 0.11.0 beta

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This release is a beta preview and as such should not be installed on a primary devices

What’s new

Highlighted changes

  • Official support for iOS 12.0 - 13.7
  • Official support for iOS/tvOS 14.0 (A8(X)-A9(X) running iOS and iPadOS; all tvOS devices are supported)
  • Official support for Apple TV 4K breakout boards (Standard and Advanced)

Bug fixes

  • Fix an issue with userland kernel patch finder that prevented checkra1n flags from being saved as well as exporting kernel information used by developers to tfp0, affecting devices running iOS 13.6 and up.
  • App can now be launched from DMG on macOS
  • Demotion is now working on Linux
  • Fixes the -20 error for Apple TV 4K by enabling USB on v1.x standard breakouts

Other changes

  • Partial bridgeOS support (CLI only, see ‘Known issues’)
  • PongoOS was switched to Darwin ABI
  • Improved kernel patch finder patchsets
  • Improved boot strategy/hooking
  • NVRAM unlock patch (for root)
  • dyld patch
    • Removes Mach-o platform restrictions (iOS binaries can now run on tvOS/bridgeOS and vice versa)
    • Significantly reduces checkra1n build size
  • Removed macOS bug reporter

Known issues

  • The exploit may not work as reliably on some devices, such as the Raspberry Pi Zero and Raspberry Pi 3.
  • Linux GUI build when using CLI mode doesn’t support auto assertion of DFU mode on advanced Apple TV 4k breakout boards.
  • bridgeOS:
    • May need to reconnect the device after exploitation for bootstrap upload
    • As soon as macOS boots it’ll take over the USB connection and disallow communication

Unsupported platforms

This beta is only available for macOS and Linux. Work is ongoing to support Windows, which will be added in a later release.

Package managers

At the moment, checkra1n only supports installing Cydia. Support for other package managers, including Zebra and Installer is coming soon and is expected within the coming weeks.

See all releases »

Frequently Asked Questions

Q: What is checkra1n?
A: checkra1n is a community project to provide a high-quality semi-tethered jailbreak to all, based on the ‘checkm8’ bootrom exploit.

Q: How does it work?
A: Magic hax.

Q: Why was the beta release delayed?
A: We didn't want the release quality to end up like iOS 13.2, you deserve better.

Q: wen eta?
A: bruh we're past that.

Q: How do I use it?
A: Open the checkra1n app, and follow the instructions to put your device into DFU mode. Hax happens auto-magically from that point and the device will boot into jailbroken mode. If you reboot the device without checkra1n, it will revert to stock iOS, and you will not be able to use any 3rd party software installed until you enter DFU and checkra1n the device again.

Q: Ugh, I don't like GUI?
A: Ok, you can use "./checkra1n.app/Contents/MacOS/checkra1n -c" from the console, or download a Linux CLI build.

Q: Is it safe to jailbreak? Can it harm my device / wipe my data?
A: We believe jailbreaking is safe and take precautions to avoid data loss. However, as with any software, bugs can happen and *no warranty is provided*. We do recommend you backup your device before running checkra1n.

Q: I have a problem or issue to report after jailbreaking.
A: Many problems and bootloops can be caused by buggy or incompatible tweaks. Remember many tweaks never saw iOS 13 in the pre-checkra1n era. If you suspect a recently installed tweak, you may attempt to enter no-substrate mode by holding vol-up during boot (starting with Apple logo until boot completes). If the issue goes away, a bad tweak is very likely the culprit, and you should contact the tweak developers.

Q: I have a problem or issue to report and I don't think it's related to a bad tweak.
A: Please check here and follow the bug report template.

Q: I lost my passcode. Can checkra1n decrypt my data or get access to a locked device?
A: No.

Q: Can I ssh into my device?
A: Yes! An SSH server is deployed on port 44 on localhost only. You can expose it on your local machine using iproxy via USB.

Q: I love the project! Can I donate?
A: Thanks, we love it too! The project does not currently take any donations. If anyone asks for donations, it's a scam.

Q: Where are the sources? I want to write a dark-mode theme and publish the jailbreak as my own.
A: checkra1n is released in binary form only at this stage. We plan to open-source later in 2020.

Q: When is Windows support coming?
A: We need to write a kernel driver to support Windows (which is a very complex piece of code!) which will take time. Rest assured however, we are working hard on it.

Credits

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