Checkra1n Jailbreak Gets iOS 14 Support for A9(X) Devices and Below, More to Come

The checkra1n jailbreak has been updated with support for iOS 14 for A9(X) devices and below. This is the first public jailbreak of iOS 14.

The team notes that Apple has added a new mitigation on A10 and higher that requires an additional vulnerability to jailbreak.

In iOS 14, Apple added a new mitigation to SEPOS on A10 and above (except on Apple TVs and iBridge): if the device was booted from DFU mode and the Secure Enclave receives a request to decrypt user data, it will panic the device. Since checkm8 does not give us control over the Secure Enclave, this is not trivial to workaround. However, with the recently published blackbird vulnerability, we are able to get control of the Secure Enclave on A10 and A10X and disable this mitigation. Support for A10 and A10X devices is being worked on and is expected to be ready in the coming weeks.





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