Latest Release
checkra1n 0.9.8 beta
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This release is a beta preview and as such should not be installed on a primary device.
What’s new
Bug fixes
This release squashes so many bugs we couldn’t keep track of them. Sorry bugs…
Other changes
- Support for Linux has arrived! See below for more information.
- Introduces webra1n (see below!).
- Low-level patching is now handled by our all-new pongoOS, engineered from the ground up for flexibility. More news on this front soon!
- Adds a whole new CLI, built around ncurses, which now supports FastDFU.
- Adds a new
--versionflag to the CLI for debugging purposes. - Adds a new option in the GUI and CLI which allows for custom boot-args to be set.
- Adds an option to skip version checking for new iOS and iPadOS versions which haven’t yet been officially tested.
- Added support for iOS and iPadOS 13.3.1.
- The checkra1n app no longer requires internet to open.
Known issues
- The Apple TV 4K will produce a -20 error, even on a successful jailbreak
Other known issues are available on our issue tracker.
Linux Support
This is the first checkra1n release which adds support for linux. More information on installing the Linux version can be found here.
Known issues
- The exploit may not work as reliably on some devices, such as the Raspberry Pi Zero and Raspberry Pi 3.
- When trying to jailbreak multiple devices, only the first attempt will succeed. Workaround: relaunch checkra1n after every jailbreak attempt.
webra1n
Webra1n is an experimental web based UI for checkra1n, broadcasting ncurses - the terminal based ui - right to your browser and allowing headless devices (such as the Raspberry Pi) to present an interface over the network.
We advise to use it locally or behind a password protected wifi network/proxy.
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 is coming soon, and will not require a checkra1n update.
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" 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.
Q: The checkra1n app doesn't open inside the DMG!
A: Follow the instructions in the DMG file and drag the app to the Applications folder.
