Uses the unpatchable hardware-level checkm8 exploit.
If your device is not recognized, go to and check "Allow untested iOS versions."
💡 If you get a "USB Error" or "Error -20," try using a different USB port (preferably a USB 2.0 port) or a different Lightning cable. To help you get the best results, let me know: What model of iPhone/iPad are you using? What iOS version is currently installed? Download Justatech Checkra1n0 4Windows iso
The Justatech interface will load, showing the Checkra1n menu. 3. Running the Jailbreak Connect your iPhone/iPad to the PC.
An original Apple USB-A to Lightning cable is highly recommended (USB-C cables often fail in DFU mode). Step-by-Step Installation Guide 1. Create the Bootable USB Open Rufus on your Windows PC. Plug in your USB drive. Uses the unpatchable hardware-level checkm8 exploit
Generally supports iOS 12.0 up to iOS 14.8 (higher versions may require specific "Skip A11 BPR check" settings). Preparation Requirements Before you begin, ensure you have the following: USB Drive: At least 2GB capacity (will be formatted). ISO File: The Justatech Checkra1n 0.4 Windows ISO. Flashing Tool: Rufus or BalenaEtcher.
Your device will reboot with the Checkra1n loader app on the home screen. ⚠️ Important Safety Tips What iOS version is currently installed
Always create an iCloud or iTunes backup before attempting a jailbreak.