Chmod X Windows

To bypass iCloud activation lock, you need to jailbreak your iOS device first. Since there is no jailbreak tool for the Windows system, you can follow the tested tutorial here to create a Linux Ubuntu environment on your Windows computer and then jailbreak your iOS device.


If the files already have the +x flag set, git update-index -chmod=+x does nothing and git thinks there's nothing to commit, even though the flag isn't being saved into the repo. You must first remove the flag, run the git command, then put the flag back: chmod -x git update-index -chmod=+x chmod +x. What was the Windows verison of chown & chmod? I just moved some screenshots from the admin's 'my pictures' to the all users (shared) folder using the command line. However, they are still set to be only readable by the admin.

  • Device models supported to jailbreak on iOS 14.x:

    full support for A10/A10X devices - iPhone 6s6s plus77plus, iPad (2018, 6th generation)
    iPad (2019, 7th generation), iPod touch (2019, 7th generation)
    limited support for A11 devices on iOS 14.x (Options > Skip A11 BPR check) - iPhone 88 plusX. After jailbreaking A11 devices, do not set Passcode, Touch ID, Face ID, or password for your lock screen.

  • If you have access to a computer running macOS 10.13 - 10.15, you are recommended to Jailbreak iOS Device on Mac first.
  • According to our tests, the jailbreaking for iPhone 5S will fail using this method. If you are using iPhone 5S, please jailbreak it on a Mac.

Check the video here to learn quickly on how to jailbreak iOS on Windows with Checkra1n:

Preparations for Jailbreaking iOS on Windows

Preparations needed for jailbreaking iOS devices on Windows:

  • Windows 7 or later, 32 or 64 bit
  • USB flash drive with 2 GB, or more, capacity
  • Download ubuntu-20.04.1-desktop-amd64.iso
  • Download rufus-3.10p.exe to create USB drive for Ubuntu
  • Download checkra1n-x86_64 file to jailbreak iOS in Ubuntu
Chmod windows

Detailed Steps for Jailbreaking iOS on Windows

# Create Ubuntu USB Flash Drive

Step 1.Insert your USB flash drive.

Step 2.Download the executable Rufus and run it – no installation is necessary. Once downloaded, the application is ready to use.

Step 3.Click the 'Select' button and find the Ubuntu image you've downloaded. After selecting, the 'ubuntu-20.04.1-desktop-amd64.iso' file will appear in the boot selection. Keep the other options default and click 'Start'.

Step 4.Rufus will show a warning that all data on your live USB will be destroyed. Please backup your USB files if necessary and then click 'OK'. Once an ISOHybrid image is detected, select the recommended option and click 'OK'.

Wait for 2 to 3 minutes when Rufus is creating USB flash drive of Ubuntu.

Click 'Close' when the process completes.


Please re-plugin the USB flash after creating Ubuntu drive in case that it becomes unrecognized.

# Boot Ubuntu on Windows

Step 5.Go to 'Windows' > 'Restart' to restart your compuer.

Press the F12 shortcut key when the computer is turned on and before the operating system loading. Here my computer is Dell.


For most computer brands, the keyboard shortcut for launching BIOS is F12. If F12 does not work, you need to search for the correct key that matches your brand.

The BIOS control window of your computer will appear. On the BIOS window, you need to choose the Ubuntu USB flash drive you've just created. Use the arrow keys on your keyboard to select the correct option, and then press 'Enter'.

Step 6.You'll see the Ubuntu system loading as below. All Ubuntu filesystem checks are in progress.


Select the first option '*Ubuntu' to boot the selected Ubuntu OS.

Step 7.When the booting ends, select 'Try Ubuntu' to start Ubuntu from the flash drive.

Now you've entered the Ubuntu system. Keep your iPhone/iPad/iPod touch connected to the computer and you'll see it on the desktop.

# Jailbreak iOS Device

Step 8.Find the 'checkra1n-x86_64' jailbreak tool file you've downloaded before. If you haven't downloaded the file before restarting the computer, you can download it now through a browser. To open Checkra1n jailbreak tool, you'll need to use Terminal.

Open Terminal, enter codes in Terminal in succession (you can copy the codes in the quotations directly):

  1. enter 'chmod +x ' (there is a space before the plus sign and a space after the x) and drag the 'checkra1n-x86_64' file to the Terminal window and press 'Enter' key.
  2. enter 'sudo ' (there is a space after sudo) and drag the 'checkra1n-x86_64' file to the Terminal window again, then press the 'Enter' key.


If the Checkra1n file can't be draged to Terminal, please copy and paste it to the desktop. Right click the file and choose 'Show in Files' and then drag it again.

If the codes are correctly entered in the previous step, then Checkra1n will be running with the following screen appear:

#What to Do when the 'Start' button of Checkra1n is grey?

If your device is running versions that have not been tested by Checkra1n, especially iOS 13.5.1 and 13.6, the 'Start'button on Checkra1n will be grey. You need to click 'Options' and select 'Allow untested iOS/iPadOS/tvOS versions' and click 'Back' then the 'Start' button will be usable.

Step 9.To jailbreak your iOS device, Checkra1n requires your device to be in recovery mode.

Click 'Next' and Checkra1n will help your iOS device enter recovery mode automatically.

Click 'Start' and follow the given instructions on Checkra1n to put your iOS device into DFU mode.

After entering DFU mode successfully, Checkra1n will immediately start installing jailbreak. Clik 'Done' when the jailbreaking process completes.

#What to Do when Jailbreaking Gets Stuck on 'Right before trigger'?

Chmod U+x Windows

If Chcekra1n gets stuck on 'Right before trigger (this is the real bug setup)' screen, try the following solutions to fix this:

    • use another USB and repeat the tutorial steps
    • flash your iOS device and restart the computer to try again

Chmod Windows Command


If the jailbreak fails, please plug your device into the USB port on the back of the computer mainframe and try the jailbreak process again. Usually the USB port on the back of the computer mainframe is 2.0 which has better compatibility then the 3.0 version in the front.

Step 10.After successful jailbreaking, quit Ubuntu and restart your computer. Go to the top right corner, click 'Power' > 'Power Off' > 'Restart'.

Chmod Windows

Manually unplug your USB flash from your computer's USB port and then press 'Enter'.

Chmod Windows Files

After restarting, your computer will automatically enter Windows operating system. Launch iBypasser Windows version, and click 'Start Bypass' to finish bypassing the iCloud activation lock screen.