How to Jailbreak Using a Custom Restore IPSW and RedSn0w (Windows)

Posted November 4, 2010 at 1:57am by iClarified | Please help us and submit a translation by clicking here | 111764 views
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These are instructions on how to jailbreak your iPhone using a custom restore ipsw and RedSn0w for Windows.

**At this time you cannot generate a custom restore ipsw using Windows. You will have to download one or get it from a Mac friend. You may find it easier to use one of the simple jailbreak options like Limera1n or Greenpois0n.

Step One
Create a folder on your desktop called Pwnage

Download RedSn0w from here and place it in the Pwnage folder. Likewise, download the latest 4.1 firmware for your device from here.

Extract the redsn0w zip that you just downloaded into the same folder.


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


Step Three
Once RedSn0w opens click the Browse button


Step Four
Select the 4.1 firmware ipsw we placed in the Pwnage folder on our desktop then click Open.


Step Five
Once the firmware has been verified click the Next button to continue.


Step Six
RedSn0w will now prepare the jailbreak data


Step Seven
From this window you can select the jailbreak options you would like. Choose to put your iPhone in DFU mode.


Step Eight
Please plug your iPhone into the computer and make sure its OFF then click the Next button


Step Nine
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 Ten
RedSn0w will now exploit your device with limera1n.


Step Eleven
Your device will now be in pwned DFU mode.


Step Twelve
Launch iTunes and select your device from the list on the left. To make iTunes restore to a custom ipsw, hold down Shift and click the Restore button. This will bring up window letting you select the custom ipsw for restore.

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hairyleprechaun - December 30, 2010 at 8:23am
Thanks iClarified, iPhone Dev team, and everyone else! I just used this article, to upgrade two iPhone 3G (one on 3.1.2 and the other on 4.0.2) to 4.2.1 using a custom firmware created on a MAC and RedSn0w for Windows 0.9.6b6. Both updated successfully while retaining the 05.13.04 baseband and both have also been unlocked successfully. Thanks again!
ter - December 15, 2010 at 8:30am
Hi can anyone confirm this to work to jalbreak an old bootrom 3GS from 4.0 (jailbroken) to 4.2.1 without touching the baseband?
romnag - November 20, 2010 at 7:22am
The latest version of Redsn0w crashes for me. When I\'m on the ram-disk mode, then the program crashes (on window) and says the program stopped work.
vartaxe - November 12, 2010 at 12:03pm
i got the 3g with 4.0.2 from a friend cause he bought the new one... iphone 4. whats the best way for jailbreaking it? limerain greenpoison or that online jailbreak thing? btw is it possible to carrier unlock it? whats that thing everyone talks about called \"activation sim card\"? do i need such a thing?
dingy - November 10, 2010 at 11:29pm
I did the jailbreak with limerain, and I try to unlock it with redsnow , everything works, except it is giving me the waiting for activation thing , and it dont read any chip not even at&t . what can I do ? please help.
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