How to Jailbreak Your iPhone 3G Using RedSn0w (Windows) [4.0.1]


These are instructions on how to jailbreak your iPhone 3G on the 4.0.1 firmware using RedSn0w for Windows. The Mac version of this tutorial is here.

This tutorial can be used to jailbreak before applying the UltraSn0w unlock. You can find instructions on how to apply the unlock
here. It will also hacktivate your device for those not with an official carrier.

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 4.0 firmware from below and place it in the same folder.

4.0.1 (3G):
iPhone1,2_4.0.1_8A306_Restore.ipsw

Extract the redsn0w executable from the RedSn0w zip file into the same folder.


Step Two
Connect your iPhone to the computer and launch iTunes.


Select your iPhone from the list of devices on the left. Now hold down
Option and click theRestore 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 firmware ipsw. Click the
Choose button to continue.


Step Three
Once iTunes has finished updating your iPhone to the desired firmware open the Pwnage folder on your desktop and launch the
redsn0w application from the redsn0w folder we extracted earlier.


Step Four
Once RedSn0w opens click the
Browse button


Step Five
Select the 4.0 (NOT 4.0.1) firmware ipsw we placed in the Pwnage folder on our desktop then click
Open.


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


Step Seven
RedSn0w will now prepare the jailbreak data

Step Eight
From this window you can select the jailbreak options you would like.


Verbose boot displays detailed information on boot of your device and is generally only needed by developers and advanced users.

Make sure
Cydia is selected. For this tutorial we will also select Custom boot logo andCustom recovery logo.

When you click to select each custom logo option a dialog window will appear asking you to select the image. Locate the image you would like to use then press the
Open button.


*Remember the rules for boot logos are: RGB or Grayscale format with Alpha channel and dimension below 320x480.


Notice that RedSn0w has already selected to Enable multitasking, Enable homescreen wallpaper, and Enable battery percentage. If you do not need multitasking we would recommend deselecting it as it makes your iPhone 3G run very slow.

Click the
Next button to continue


Step Nine
Please plug your iPhone into the computer and make sure its OFF then click the
Nextbutton


Step Ten
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 Eleven
Your iPhone will now reboot


Step Twelve
RedSn0w will then begin uploading the new RAM Disk and Kernel.


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


You can now unlock your device using UltraSn0w by following
these instructions.

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

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