HOW TO: Jailbreak iOS 4.1 with Sn0wbreeze 2.1

Sn0wbreeze 2.1 was out this morning to jailbreak iOS 4.1 on all devices. The new version of Sn0wbreeze is based Limera1n's exploit but with this one, you can preserve your device's baseband by creating custom firmwares and upgrade your device using it to keep your carrier unlock.

Supported Devices:

• iPhone 4, iPhone 3GS, iPhone 3G
• iPod touch 4G / 3G / 2G
• iPad WiFi and 3G
• Apple TV 2G

Before we start the steps, make sure your computer is running Windows 7, Vista or XP and your iOS device is running older firmware not iOS 4.1.

STEP 1: Download iTunes 10.1 (or iTunes 10) from the links at the bottom of post.

STEP 2: Now start iTunes and sync your iPhone with your PC so that it backs-up all your important data including settings, apps, music, contacts and photos.

STEP 3: Download Sn0wbreeze 2.1 (links at the bottom of post) and move all these files on the desktop.

STEP 4: Launch Sn0wbreeze (please note that when used windows 7 or vista, you need to start your application in administrator mode, by clicking the right mouse button on the icon and selecting "Run as administrator") then select Expert Mode and click on the blue arrow.

STEP 5: Now, point Sn0wbreeze to the original firmware (downloads at the bottom) by clicking on Browse and select it as below:

STEP 6: Once your device is recognized, hit the blue arrow.

STEP 7: Click on General, and check on Activate the iPhone [Hacktivate] if you are on unofficial carrier and want to hacktivate your phone by Sn0wbreeze.

Other items are optional, depends on your choices. You can't install Ultrasn0w automatically due to some problems between the developer of Sn0wbreeze and the iPhone Dev Team.

STEP 8: At the end, hit Build IPSW to start creating your firmware.

STEP 9: Once you finished, you have to put your device in DFU mode. Sn0wbreeze will help you with that.

STEP 10: Now iTunes will detect will detect your device in recovery mode. To install the new firmware, you have to restore using the cooked firmware by clicking on the iPhone icon on the left sidebar of iTunes then hold left “alt” button (“shift” button on Windows) on the keyboard and then click on “Restore” then release the alt button, now select the custom firmware created by Sn0wbreeze and let iTunes go in a bunch of steps.

STEP 11: Well done, now you can unlock your iPhone 4, iPhone 3GS, iPhone 3G using the latest version of Ultrasn0w by following the step by step guide posted here.

In case you got any problems with the guide, we would like to hear from you by commenting in the comment section below. [via iPhoneItalia]

Download iOS 4.1 for iPhone and iPod touch
Download iOS 3.2.2 for iPad
Download iTunes 10.1
Download Sn0wbreeze 2.1
Download .NET Framework 3.5 (required to run Sn0wbreeze)