PwnageTool 4.1 has been released to jailbreak iOS 4.1 on iPhone 4, 3GS, 3G, iPod Touch 4G, 3G on iOS 4.1. PwnageTool 4.1 jailbreaks iOS 4.1 by creating custom iOS 4.1. PwnageTool also preserves iPhone baseband.

In this guide you’ll learn how to create custom iOS 4.1 to jailbreak iPhone 4, 3GS (New & Old bootrom), 3G, iPod Touch 4G, 3G while preserving iPhone baseband so that you may use UltraSn0w to unlock iPhone later.

Disclaimer: This guide is for educational and information purposes only. Follow the steps below at your own risk. We cannot be held responsible if anything goes wrong.

Lets create custom iOS 4.1 (Jailbreak’d iOS 4.1) to jailbreak iPhone 4, 3GS, 3G, iPod Touch 4G, 3G on iOS 4.1.

How to Jailbreak iOS 4.1 with PwnageTool 4.1

Step 1

Download iOS 4.1 (for iPhone/iPod Touch)
Download PwnageTool 4.1

Step 2

Open the downloaded PwnageTool.dmg and copy the PwnageTool.app to your desktop and execute it from there.

Hit the OK button.

Step 3

Now select Expert Mode from the top left side of the window.

and then select your iDevice. Hit the Next button.

Step 4

Now hit the Browse for IPSW button and select iOS 4.1 firmware for your device (downloaded from Step 1).

Step 5

On next screen, Select General and hit the Next arrow button.

Step 6

iPhone users:

Select Activate the phone option if you’re on unofficial carrier.
Do NOT select Activate the phone option if you’re on official carrier e.g. AT&T.

Step 7

Keep hitting Next button until you’re back to the same screen where you selected General.

Now Select the Build Option and Hit Next.

PwnageTool will prompt you to select a destination folder to save custom iOS 4.1.

PwnageTool will start building your Custom IPSW.

During the build process it’ll prompt you for your admin password.

Step 8

Once the custom IPSW has been built, PwnageTool will ask you to connect your iDevice to your computer. Once your device is detected, you’ll be instructed to put your iDevice into DFU mode.

Press and hold the power + home buttons for 10 seconds.
Release the power button but continue holding the home button for 10 seconds.

Once the iPhone/iPod Touch is in DFU mode, the follow popup message will appear. iTunes will also pop-up.

Step 9

In iTunes, hold the Alt/Option key and hit Restore. From the popup window, browse to the Folder where you saved custom iOS 4.1 and select you custom .ipsw file that you just created and click Open Button. (Make sure you’re selecting custom firmware, Not official one)