This step by step guide and tutorial will show you how to use RedSn0w 0.9.6 Beta 1 to jailbreak your iPhone 3G iOS 4.1. So far, this only works for the iPhone 3G and the iPod Touch 2G, and is a Mac only tool (although a Windows version is coming).
Before we start the tutorial, make sure you read and understand this. Once you have read this article through, come back here and let’s work on jailbreaking your iPhone 3G iOS 4.1 with RedSn0w…
How to Jailbreak iPhone 3G iOS 4.1
Step 1: Make sure you are running the latest version of iTunes (iTunes 10).
Step 2: Download iOS 4.1 for iPhone 3G to your desktop from our iPhone downloads section.
Step 3: Update your iPhone to iOS 4.1 via iTunes.
Step 4: Download the latest version of RedSn0w from here.
Step 5: Point RedSn0w to the iOS 4.1 you downloaded in step 2.
Step 6: Select “Install Cydia”.
Step 7: Follow the onscreen instructions.
Step 8: Let RedSn0w do the hard work for you. Once jailbroken, your iPhone will reboot.
That’s all there is to it. You will not be able to unlock, at least for the time being. For the most up to date information about jailbreaking, check out this page, and look at this for up to date information about unlocking.