This release is a beta preview and as such should not be installed on a primary device
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
- May fail on fresh installations of tvOS
- 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
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.