The CheckRa1n jailbreak tool needs to be installed on the macOS system. After making the jailbreak U disk with the help of 3uTools, you can use CheckRa1n to jailbreak your iPhone on a Windows computer.
Wonderful right?
Supported devices: iPhone 5S-iPhone X
Compatible system: iOS 12.3 to 14.7
How to Make Jailbreak USB flash drive:
Prepare a USB flash drive of 1GB or more, then connect the USB flash drive to the computer, open the 3uTools on the computer, and click "Make Checkra1n jailbreak USB flash drive" in the "Flash&JB-Jailbreak", then the function description will pop up and display For the inserted U disk, select the U disk to be used for making and click the "Start Making" button.
you can also use iso chekra1n 12.4 file
Notice: Note that this step will clear all the data currently stored on the U disk, please be sure to back up your personal data.
3uTools will automatically create a jailbroken USB flash drive. After the creation is complete, click the "Close" button
How to jailbreak your iphone/ipad
Use the data cable to connect the iPhone to the computer, open the 3uTools on the computer, select "Enter Recovery Mode" in the "Toolbox", and keep the connection after the iPhone enters the recovery mode, do not disconnect the data cable;
now click on start button
follow instruction