In September of this year, security researchers @ axi0mX published a vulnerability called checkm8. Checkm8 is the meaning of checkmate, the "general" in chess. Different from previous iOS vulnerabilities can be fixed through software. This time the vulnerability is a hardware vulnerability. The range of influences includes A5 to A11 chips, which are also included in the iPhone 4s to iPhone X and even the latest iPad 10.2.
Support for iOS 13.2.2
Today, Checkra1n, a tool that uses the checkm8 vulnerability for JB, has finally released the beta version, which is said to be supported by the iOS device from iPhone 5s to iPhone X. For iOS versions, it is also supported from iOS 12.3 or above. Since the tool is limited to macOS execution (still developing Windows/Linux versions) during the Beta phase, some devices will be supported later.
The device is not supported as follows:
- iPad Air 2
- iPad 5th Gen
- iPad Pro 1st Gen
The experimental support device is as follows:
- iPhone 5s
- iPad Mini 2
- iPad Mini 3
- iPad Air
- Download the dmg installation file for checkra1n macOS.
- Open security permissions, let users install third-party software on macOS, select "force open".
- When you are done, you can find the program and execute it as follows. The user connects to the computer with the Lightning cable and presses "start" to start.