RedSn0w is the popular jailbreaking tool which was developed by the iPhone Dev Team. The team released RedSn0w version 0.9.6b1 earlier this week, which allows iPhone 3G users to jailbreak iOS 4.1.
In this guide, we will help you with a step by step procedure on how to jailbreak iOS 4.1 for the iPhone 3G.
Before you continue, here are some points to note:
Download the latest release of Redsn0w by clicking here and save the application in a folder named “Pwnage” on your desktop.
Click here to download the latest iOS 4.1 firmware file (iPhone1,2_4.1_8B117_Restore.ipsw) for iPhone 3G and save it in the same folder.
Double click the Redsn0w zip file and extract the application to the Pwnage folder.
Connect your iPhone 3G to the computer, which should automatically launch iTunes.
From the ‘Devices’ section on the left pane of iTunes, select your iPhone 3G device. Now, hold the option key down and click the ‘Restore’ button.
Navigate to the Pwnage folder on the desktop and select the downloaded iOS 4.1 firmware file (iPhone1,2_4.1_8B117_Restore.ipsw). Click on the ‘Choose‘ button to let iTunes update your iPhone with the required firmware.
Navigate back to the Pwnage folder and launch the Redsn0w application.
You will be asked to select the corresponding IPSW file. Click on the Browse button and select the iOS 4.1 firmware file (iPhone1,2_4.1_8B117_Restore.ipsw).
Redsn0w will verify the firmware file and inform you if it has successfully identified it. Click on ‘Next‘ to proceed.
Redsn0w will now start preparing the jailbreak data
You will now be prompted to select the jailbreak options you would like. Check the following options. (A few of these may have already been selected by default)
‘Verbose boot‘ offers detailed booting information to users. This may not be necessary for common users and need not be selected. You may also choose to not check ‘Custom boot logo‘ and ‘Custom recovery logo‘ options if you prefer the default icons. However, if you wish to provide your own boot and recovery logos, do remember that these images have to be PNG files in RGB or grayscale mode and inside 320×480 resolution.
Select ‘Next‘ to continue. You will now be prompted to switch OFF your iPhone 3G and plug it to the computer. Follow the instructions and click on ‘Next‘ to move to the next screen:
You will now need to put your iPhone 3G into the DFU mode. Redsn0w will take you through the necessary steps:
Your iPhone 3G should reboot now.
Redsn0w will now begin uploading the new RAM disk and kernel
You will now be notified once the jailbreaking process is complete. Click on the ‘Finish‘ button to exit the application.
Your iPhone will reboot once again (which could take approximately 5 minutes). After it has rebooted, your iPhone 3G should be successfully jailbroken. You should find Cydia jailbreak app on your iPhone 3G’s home screen.