checkra1n

Latest Release

checkra1n 0.12.1 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

Adds an on-device alert to indicate checkra1n’s Safe Mode is active
Adds support for iBridge SSH from the same host
Partial support for the original HomePod (CLI only, tested to work with audioOS 13 and 14)

Bug fixes

Fixes an issue that would often cause Safe Mode to be entered on iOS 14.2 regardless of whether the user requested it or not
Safe Mode no longer loads 3rd-party LaunchDaemons
NVRAM is now unlocked on iOS 14.2 as well
Fixes an issue where jailbreaking an AppleTV fail on fresh tvOS installations
The bundled dd binary now has the entitlement required to access block devices
Fixes multiple memory leaks in early-boot binaries
Changes some GUI internals that should reduce the chance of exploit failure and GUI hiccups

Notes

A11 devices on iOS 14.0 and above require removing the passcode and enabling “Skip A11 BPR check” in the options. This is not recommended, but it’s there.

Known issues

A10/A10X devices on 14.3 and above as well as T2 devices on bridgeOS 5.1 and above will crash and reboot before reaching PongoOS
On A10/A10X devices running iOS 14, boot may sometimes hang in pongoOS. In that case, reboot the device and retry.
A7 devices will currently not work with the Linux version
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:
- As soon as macOS boots it’ll take over the USB connection and disallow communication
Some users have reported checkra1n crashing when Chinese is set as the only system language. It is unknown whether any other language is affected.

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