Once you have booted into the Checkra1n interface on your PC hardware, follow these universal steps to jailbreak your device:
As soon as the screen turns on, repeatedly press your computer's (Common keys include F12, F11, F8, F12, or Esc depending on your motherboard brand). Select your USB flash drive from the boot menu list. checkra1n 012 1 beta windows download portable
Here is the definitive guide on what this file actually is, why you must avoid certain downloads, and how to safely run Checkra1n if you only own a Windows PC. Once you have booted into the Checkra1n interface
I can give you the exact steps or point you to a newer tool if your device is running a newer iOS. Share public link I can give you the exact steps or
Checkra1n will inject the exploit. You will see code scrolling on your device's screen.