Jailbreak iOS 14.5 with checkra1n v0.12.3 on iPhone and iPad using an M1 Mac

With its newest update, checkra1n can now jailbreak iOS 14.5. The new update version 0.12.3, also features preliminary support for M1 Macs, however, it comes with a few caveats as there are some compatibility issues with the USB stack on M1 Macs.

checkra1n iOS 14.5 M1 Mac

Jailbreak iOS 14.5 with checkra1n

Along with the support for iOS 14.5 and M1 Macs, the new version also features a bunch of bug fixes. Note that there are no new devices supported in this release, so most of the recent iPhone and iPad models are still unsupported by checkra1n.

Here is the complete changelog for checkra1n v0.12.3:

Highlighted changes

  • Support for iOS 14.5
  • Preliminary support for M1 Macs
  • 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.

When it comes to M1 Mac compatibility, the checkra1n team has shared that there are “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”. If this issue happens for the user, checkra1n will inform them to unplug and replug the lightning cable to resolve the issue. This issue only impacts the port USB-C on Apple Silicon Macs, when using A7, A9X, A10, and A10X devices.

checkra1n can jailbreak iOS 14.5 on the following devices:

  • iPhone 6s, 6s Plus, and SE
  • iPad 5th generation
  • iPad Air 2
  • iPad mini 4
  • iPad Pro 1st generation
  • Apple TV 4 and 4K
  • iBridge T2

Support for iPhone 7 and 7 Plus, iPad 6th and 7th generation, iPod touch 7, and iPad Pro 2nd generation is expected to be added to checkra1n in a future update.

The new update is available for macOS and Linux as a beta. A Windows version is still work-in-progress and expected to release in the future.

Newer devices can be jailbroken using unc0ver, as long as they are on iOS 14.4 and older versions.

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