Checkra1n Jailbreak Updated With Support for iOS 14.5, M1 Macs

The checkra1n jailbreak has been updated to version 0.12.3 beta bringing support for iOS 14.5 and M1 Macs.

Checkra1n supports iPhone 5s through iPhone X. Users on A11 devices can disable BPR to jailbreak but that is not recommended.

Highlighted changes
● Support for iOS 14.5
● Preliminary support for M1 Macs - read the announcement
● New --force-revert command line option to force rootFS reverting without access to the loader app
The included binpack has been updated and thinned


Bug fixes
● Fixes an issue that caused the loader app to crash on tvOS 12
● Fixes checkra1n crashing on macOS if using a recent MobileDevice framework
● Fixes an issue that could cause the “terminal UI” to crash on Linux
● Fixes an issue where the “terminal UI” could leave the terminal in an unusable state on exit
● The “devhelper” process on Linux is now properly cleaned up on exit

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
● 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: If you disconnect the cable, then as soon as macOS boots it’ll take over the USB connection and disallow communication with the T2
● Some users have reported checkra1n crashing when Chinese is set as the only system language. It is unknown whether any other language is affected.

Here's the announcement on support for M1 Macs as hosts.


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Today we're releasing checkra1n 0.12.3 with support for Apple Silicon Macs as hosts. Due to changes in the USB stack, you may be required to unplug and replug the lightning cable as part of the jailbreaking process.

There is an issue in the USB stack of Apple Silicon Macs that will cause certain devices to crash and reboot when attempting to perform checkm8 over a USB-C port. The problematic part of the exploit can be disabled and replaced with a manual unplugging and replugging of the lightning cable. Checkra1n will detect the conditions that would cause this issue, and instruct the user to perform the replug if necessary.

This issue only affects USB-C on Apple Silicon macs, and only when using A7, A9X, A10 and A10X devices, i.e.:
● iPhone 5s, 7 and 7 Plus
● iPad 6th and 7th generation
● iPad Air 1
● iPad mini 2 and 3
● iPad Pro 1st and 2nd generation
● iPod touch 7
● Apple TV 4k

If you have any device not listed above, this change does not affect you.
If you have an Apple Silicon Mac mini and are using the USB-A ports, this change does not affect you.
If you have an Intel Mac as host, this change does not affect you.
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You can download the checkra1n 0.12.3 beta from here or at the link below:
● Where to Download the Checkra1n Jailbreak From

You can find instructions on how to jailbreak your device using checkra1n here:
● How to Jailbreak Your iPhone Using checkra1n

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