iOS 12.5.5 is a special firmware. Apple released it long after iOS 13, 14, and 15 launched, specifically to patch security flaws in older devices like the . Because these devices use the A7, A8, and A8X chips, they are vulnerable to the checkm8 bootrom exploit . This makes Checkra1n the only permanent jailbreak for these devices on iOS 12.5.5.
Once finished, the Checkra1n app will close, and Cydia will appear on your home screen. You are now officially jailbroken! Important: Understanding the Semi-Tethered Nature
: Once the checkra1n interface appears, connect your iPhone or iPad (e.g., iPhone 5S, 6, or 6 Plus) running iOS 12.5.5. Enter DFU Mode : Follow the on-screen instructions to put your device into . The jailbreak will then run automatically. Finish & Restart
Always download checkra1n from the official website checkra.in. Avoid third-party “Windows installers” unless verified by the community.
Download , a free tool used to create bootable USB drives, from its official website.
Once the Linux environment loads, press Alt + F2 (or Fn + Alt + F2 ) to launch the checkra1n interface.
A reliable Lightning-to-USB-A cable. (USB-C to Lightning cables often fail to put devices into DFU mode properly during this process). Step 1: Download the Required Tools
Go to the official Rufus website and download the latest portable version of .
The tool will automatically put your iOS device into (you will see an iTunes logo or a computer graphic on your phone screen).
If you search the internet and find websites claiming to offer "checkra1n.exe for Windows," proceed with extreme caution. These are often:
XR not supported? · Issue #265 · checkra1n/BugTracker - GitHub
Click the button and choose the downloaded Checkra1n/Linux ISO file.
A software utility called (to flash the tool onto your USB). Step 1: Download the Necessary Files
Before downloading any files, you must understand one critical fact:
Download Checkra1n for Windows iOS 12.5.5: Ultimate Jailbreak Guide
iOS 12.5.5 is a special firmware. Apple released it long after iOS 13, 14, and 15 launched, specifically to patch security flaws in older devices like the . Because these devices use the A7, A8, and A8X chips, they are vulnerable to the checkm8 bootrom exploit . This makes Checkra1n the only permanent jailbreak for these devices on iOS 12.5.5.
Once finished, the Checkra1n app will close, and Cydia will appear on your home screen. You are now officially jailbroken! Important: Understanding the Semi-Tethered Nature
: Once the checkra1n interface appears, connect your iPhone or iPad (e.g., iPhone 5S, 6, or 6 Plus) running iOS 12.5.5. Enter DFU Mode : Follow the on-screen instructions to put your device into . The jailbreak will then run automatically. Finish & Restart
Always download checkra1n from the official website checkra.in. Avoid third-party “Windows installers” unless verified by the community.
Download , a free tool used to create bootable USB drives, from its official website.
Once the Linux environment loads, press Alt + F2 (or Fn + Alt + F2 ) to launch the checkra1n interface.
A reliable Lightning-to-USB-A cable. (USB-C to Lightning cables often fail to put devices into DFU mode properly during this process). Step 1: Download the Required Tools
Go to the official Rufus website and download the latest portable version of .
The tool will automatically put your iOS device into (you will see an iTunes logo or a computer graphic on your phone screen).
If you search the internet and find websites claiming to offer "checkra1n.exe for Windows," proceed with extreme caution. These are often:
XR not supported? · Issue #265 · checkra1n/BugTracker - GitHub
Click the button and choose the downloaded Checkra1n/Linux ISO file.
A software utility called (to flash the tool onto your USB). Step 1: Download the Necessary Files
Before downloading any files, you must understand one critical fact:
Download Checkra1n for Windows iOS 12.5.5: Ultimate Jailbreak Guide