Plug in your iPhone/iPad. Windows might install generic drivers — ignore or allow.
Right-click checkra1n.exe → Run as administrator . This ensures the bootloader can access low-level USB functions.
Open the loader app → tap Cydia or Sileo → tap Install .
The jailbreak community has long relied on checkra1n — a powerful bootrom exploit-based tool for iOS devices. However, for Windows users, the journey has always required workarounds, Linux bootable USBs, or unofficial porting attempts. That changed when JUSTATech stepped up to provide a streamlined, Windows-native solution for running checkra1n 0.12.5.
The device will show the checkra1n logo. After reboot, you’ll see the checkra1n loader app on your home screen.