The development team behind iOS jailbreak tool Checkra1n has released version 0.11.0 of Checkra1n, which adds support for iOS 14, but only on a limited number of devices.
The team said in a statement that for newer devices, they need more time to work around a new security mitigation.
checkra1n 0.11.0 is now available, adding support for iOS 14 on A9(X) devices and below.
A10 devices and above NOT SUPPORTED YET, read our statement 👇https://t.co/SIjT4PeZEX
— checkra1n (@checkra1n) September 22, 2020
The statement said:
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.
We are not yet sure whether the same can be done for devices with the A11 chip with this vulnerability, but we will release another statement once we know more.
The new version of the Checkra1n tool can support jailbreaking iOS 14 and iPadOS 14 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
The team said it hopes to support updated devices in the coming weeks, with support for iPhone 8, iPhone 8 Plus and iPhone X to be "addressed in a future statement".
Checkra1n was created by the security researchers responsible for the discovery of the Checkm8 vulnerability last year, which exists on nearly every chip Apple makes, paving the way for permanent, unfixable jailbreaks on hundreds of millions of affected iOS devices.