How to Perform an Untethered Jailbreak of Your iPhone 4 (Windows) [5.0.1]

Posted December 27, 2011 at 11:47am by iClarified | Please help us and submit a translation by clicking here | 531905 views
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These are instructions on how to perform an untethered jailbreak of your iPhone 4 on 5.0.1 using RedSn0w for Windows. The Mac version of this tutorial is here.

This procedure will cause you to upgrade your baseband potentially ruining your chances for an unlock. Please follow a Windows tutorial on how to update to iOS 5.0.1 using a custom ipsw if you need an unlock.

If you want to jailbreak a lower firmware version you can find the appropriate tutorial here.



Step One
Create a folder on your desktop called Pwnage

Download the latest version of RedSn0w from here and place it in the Pwnage folder. Likewise, download the 5.0.1 firmware from here and place it in the Pwnage folder. (Note: you do not need to download the 5.0.1 firmware if you are already on iOS 5.0.1)

Extract the RedSn0w zip file by double clicking it.


Step Two: (You can skip this step if iOS 5 is already installed on your device)
Connect your iPhone to the computer and launch iTunes.


Select your iPhone from the list of devices on the left. Now hold down Shift and click the Restore button. Restore is preferred as it won't create any wasted space on your iPhone.


Navigate to the Pwnage folder on your desktop and select the 5.0 firmware ipsw. Click the Choose button to continue.


iTunes will now update your iPhone to the new firmware.

Step Three
Launch the redsn0w application from the redsn0w folder we extracted earlier.


**Windows 7 users may want to try running the redsn0w executable mode as an administrator in Windows Vista compatibility. You can do this by right clicking the executable and selecting Properties from the contextual menu.

Step Four
Once RedSn0w opens click the Jailbreak button


Step Five
Plug your iPhone into the computer and make sure its OFF then click the Next button


Step Six
RedSn0w will now guide you through the steps to get into DFU mode. You can find more help with DFU mode here


Hold down both the Home button and the Power button for 10 seconds.


Release the Power button and continue holding the Home button until RedSn0w detects the device.


Step Seven
Your iPhone will now reboot


Step Eight
RedSn0w will now prepare the jailbreak data.


Step Nine
Select Cydia from the list of options and click Next.


Step Ten
Your iPhone will now be rebooted again and RedSn0w will begin uploading the new RAM Disk and Kernel.


Step Eleven
Once this is complete you will be notified that RedSn0w is done. When your iPhone finishes rebooting (5 minutes or so) it will be jailbroken with Cydia on the SpringBoard.



*As usual a big thanks to the iPhone Dev-Team, Pod2g, and Geohot for their hard work and contribution to the iPhone community.

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raja.asad - March 30, 2013 at 1:41pm
how can I unlock my iphone 4s as factory unlock???
target - December 26, 2013 at 6:15am
HI if you want to unlock your iphone 4s network lock permanently .Then have a look at sites like Unlocking4u.com here they are rendering remote unlocking service to unlock all model iphone from network lock permanently .You first verify that whether they are rendering service for your country and network provider .If yes then pay for it and unlock your iphone 4s .....
raja.asad - February 17, 2013 at 2:20pm
I have iphone 4 , t-mobile, how can i unlock ???
WALID78 - February 26, 2012 at 8:49am
How to Perform an Untethered Jailbreak of Your iPhone 4 (Windows) [5.0.1]
yayako - February 1, 2012 at 3:10pm
Hi all, i had an iphone 4 baseband: 2.10.04, Itune v 10.5.2. I'd like to upgrade 5.0.1 and follow this tutorial by; downloaded redsn0w_win_0.9.10b3 and iPhone3_3_5.0.1_9A405_Restore.ipsw. Then i had problem with the first step when i try to "restore iPhone3_3_5.0.1_9A405_Restore.ipsw" with Itune, it's said "this firmware is not compatible". Could anyone help me to solve this out? Appreciate for the next reply.
lucky005 - January 4, 2012 at 11:23am
I have successfully jailbreaked my iphone 4 with baseband 4.11.08 but when i cut my sim and place it in the phone it shows no service please help me.
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