A Guide on How to Jailbreak iOS on Windows System

Note:

You need to jailbreak your device before removing iCloud Activation Lock.
Before jailbreaking, you need to use 4MeKey for Windows to help create a jailbreak environment (Checkn1x) in the USB flash drive.
Then start the jailbreak environment (Checkn1x) in your USB flash drive to jailbreak your iOS device.
This tutorial will guide you to jailbreak the iOS device step-by-step.

Part 1: What Should You Prepare Before Jailbreaking?

Please make sure you have the jailbreak environment (Checkn1x) installed on your USB flash drive with 4MeKey for Windows.

Part 2: Step-by-Step Guide on How to Jailbreak on Windows

Step 1. Boot the system into the jailbreak environment

Restart your computer. When the computer is powered on and loaded in the meanwhile, press F12 (Boot Menu).

start to boot into jailbreak environment

Note:

For most branded computers, the shortcut key to "Boot Menu" is F12. If F12 is invalid, refer to the following "Boot Menu" shortcuts

swipe to view more

Boot Menu Key

Desktop Brand

Laptop Brand

Motherboard Brand

ESC

Dell

ASUS, Sony

MAXSUN, UNIKA, SUPOX, Spark, SOYO, EPOX, UNIKA, Jetway, J&W, Colorful, ECS, SOYO, FOXCONN

ASUS, BenQ

ASUS, YESTON, J&W

HP, BenQ

BIOSTAR, GUANMING

F10

ASL

F11

MSI

MSI, ASRock, ONDA, Colorful, ECS, Gamen, Topstar

F12

Lenovo, HP, Acer, Hasee, eFound, THTF, Haier

Thinkpad, Dell, Lenovo, TOSHIBA, Samsung, IBM, Acer, Hasee, Haier, eFound, THTF, GIGABYTE, Gateway, eMachines

GIGABYTE, Intel, Cthim, SOYO, FOXCONN, Gamen, Topstar

Note:

If your computer is unable to enter the "Boot Menu", try entering the COMPUTER BIOS/UEFI and modify the system Boot entry Settings to enter the Linux CheckRA1n environment. For detailed guide, please check the following:

In the startup window, select the USB flash drive that you have just used to create the jailbreak environment using 4MeKey.

select burned usb drive in the startup window

Once the computer enters this interface below, it is already in the jailbreak environment (Checkn1x).

Step 2. Jailbreak your iOS device in the jailbreak environment

After you've launched the Checkra1n, connect your iOS device to the computer. Then select the Options from the keyboard arrow key and press Enter to set the jailbreak tool.
From the Settings screen, select Allow Untested iOS/iPadOS/tvOS versions option from the keyboard arrow key, and press Enter to select it.
After selecting "Skip A11 BPR check", press Enter to select.

Note1:

If you have an iPhone 8/8 Plus/ X with iOS 14 system, you need to tick "Skip A11 BPR check" option .

Note2:

You could not jailbreak an iPhone 8/8 Plus/ X running iOS 14(with lock screen passcode). If with lock screen passcode, please have a deep flash of the firmware firstly, and try to jailbreak again.

Then choose the Back button and press Enter to back to the main interface.
After you hit the Start button, press Enter to jailbreak your iOS device.
To jailbreak your iOS device, CheckN1x requires your device be in DFU mode. Select "Next" and the program will direct you to DFU mode.
Check the "Next" option and Checkn1x will automatically put your iOS device into recovery mode first.
Select the "Start" option, and then follow the instructions on Checkn1x to put your iOS device into DFU mode.
After your device enters DFU mode successfully, Checkn1x will automatically jailbreak your device. When the jailbreaking process is completed, select "Done" and unplug the USB flash drive.

Part 3: How to Remove iCloud Activation Lock After Your Device is Jailbroken Successfully?

Please restart your Windows computer and then use 4MeKey to bypass iCloud Activation Lock.
You can check the 4MeKey Guide to see how does 4MeKey bypass iCloud Activation Lock.

Some Tips for the Most Commone Issues You Probably Have

Tip 1: If the jailbreaking process gets stuck:

Change a different USB flash drive and try to jailbreak again.

Restart your iOS device and computer and try to jailbreak again.

Tip 2: If jailbreak failed:

Re-plug your device into the USB port on the back of your computer host and try again.

Tip 3: Notes for iPhone 8/8 Plus/ X devices with iOS 14 system:

For Phone 8/8 Plus/ X with iOS 14 system before jailbreaking, they should be in inactive and without any lock screen passcode.

Tip 4: Failed to jailbreak on iOS 14.2 devices:

On some iOS 14.2 devices, the jailbreak tool will tell you that the jailbreak is failed (an error-92 prompts), but the jailbreak is actually successful. You can try to remove iCloud Activation Lock using 4MeKey. (iOS 14 & iOS 14.1 devices do not have this issue)

Tip 5: The USB flash drive cannot format or write:

After creating a jailbreak environment in the USB flash drive using 4MeKey, the USB flash drive is probably unable to format and write data. If you encounter similar problems, you can use the system's built-in disk management tools to format your USB flash drive.