Once in DFU mode, the jailbreak process will begin automatically. Wait for the "All Done" message. 4. Post-Jailbreak Setup Your device will reboot. Look for the checkra1n loader app on your home screen. Open the loader and tap to install the package manager.
Select to download the Cydia package manager. Your device is now successfully jailbroken. Important Limitations and Risks
Your device will respring. Open Cydia and let it load the initial files. Important Troubleshooting & Tips
With the Checkra1n interface open on your PC, follow these steps to execute the jailbreak: download checkra1n for windows ios 12.5.5
Download the checkn1x ISO file from a trusted GitHub repository. Save both files to your Windows desktop for easy access. Step 2: Create the Bootable USB Drive Insert your USB flash drive into the Windows PC. Open Rufus with administrative privileges. Select your USB drive under the dropdown menu. Click Select and choose the downloaded checkn1x ISO file. Keep all other settings default and click Start . Choose Write in DD Image mode if prompted by Rufus. Wait for the process to finish and close Rufus. Step 3: Boot Your PC into checkn1x
Minimum 2GB capacity (all data on this drive will be erased).
If you can tell me you are getting (if any) or which Windows version you are using, I can provide more specific troubleshooting steps for your checkra1n installation. If you'd like, I can: Show you how to fix the "Error Code -20" List the top essential tweaks for iOS 12.5.5 Explain the difference between Checkra1n and unc0ver Once in DFU mode, the jailbreak process will
Download Checkra1n for Windows iOS 12.5.5: The Ultimate Jailbreak Guide
Your computer will bypass Windows and load the lightweight Linux interface containing Checkra1n. Step 4: Configure Checkra1n Options
The checkra1n jailbreak is based on a very low-level hardware exploit called , which targets the iPhone's bootrom before the main iOS system even begins to load. Executing this exploit requires incredibly precise USB timing and direct hardware access that the Windows kernel drivers are simply not designed to provide. Post-Jailbreak Setup Your device will reboot
The checkra1n team (based on the checkm8 hardware exploit) initially released the tool for macOS and Linux. Because the checkm8 exploit operates at a low-level hardware layer, it requires specific USB handling protocols that the developers found difficult to implement reliably on Windows without risking device bricking or security issues.
However, Windows users are not completely locked out. You can still run checkra1n on Windows using one of two reliable methods: