We have already seen the release of the PwnageTool 4.2 for the Mac that allows to jailbreak iOS while preserving the baseband on your device to do an unlock later-on using Ultrasn0w. Now Sn0wbreeze 2.2 is already available from ih8sn0w for sometime that is basically a PwnageTool for the Windows users! It also allows to preserve the baseband while jailbreaking for a later unlock. Most impressive thing about the new PwnageTool 4.2 / Sn0wbreeze 2.2 is the inclusion of the GreenPois0n exploit, which means that you can now create untethered 4.2.1 custom firmware files without the upgraded baseband.
Following devices are supported in this version of the PwnageTool 4.2 / Sn0wbreeze 2.2:
- iPhone 3G/3GS/4
- iPod Touch 2G/3G/4
Note this guide is for the use of Sn0wbreeze 2.2 (Windows ) but the steps are similar if you are on the Mac and want to use the PwnageTool 4.2. If you are not interested in the unlocking but only in the untethered jailbreaking of your iOS 4.2.1 device then follow this relatively simple guide on the use of GreenPois0n to achieve JB.
Here is the guide on the usage of the Sn0wbreeze 2.2:
Step 2: Download the stock FW for iOS 4.2.1.
Step 3: Connect your iOS device to the system.
Step 4: Now launch the Sn0wbreeze and you will see a splash screen. Just skip this screen by pressing the blue arrow at the bottom.
Step 5: Now it will prompt you to select the iOS 4.2.1 FW that you have downloaded in the Step 2. Now browse and select that.
Step 6: Now it will present you with a choice either to choose a Simple or an Expert mode. Choose the Expert mode here and continue.
Step 7: Now there is an opportunity to customize the FW. So just click on the General and on the blue arrow to continue to the next screen.
Step 8: Now on the screen that appears you have a choice of installing a number of tweaks such as animated bootlogos, openSSH installation, native backgrounding support, user wallpaper and battery percentage etc. After you are done press the blue arrow to continue. Don’t’ forget to check the “Activate the iPhone [Hacktivate]” option!
Step 9: Now Sn0wbreeze will create the custom FW based on the choices that you made. It takes some time such as 5 to 10 minutes depending upon the computer speed. You don’t need to do anything here.
Step 10: Now firmware is ready but you need to put your device in DFU mode. Follow the on screen instructions to do so.
Step 11: Now launch the iTunes and it will tell you that it found a device in recovery mode. Press ok.
Step 12: Now in the iTunes hold down the Shift key and press the Restore button and iTunes will initiate the installation process for the custom FW that you have just cooked. It will take some time.
Step 13: Finally you are done with the untethered jailbreaking of iOS 4.2.1 via Sn0wbreeze 2.2!
Now we need to proceed with the unlocking of the old baseband using the Ultrasn0w 1.2.
Please follow the following steps to do so:
Step 1: Now you are jailbroken on iOS 4.3 you need to unlock the phone using the Ultrasn0w.
- Load Cydia on your iPhone.
- Push the Manage tab at the bottom.
- Now push on the Sources.
Step 2: Now tap on the Edit and then tap on Add. Now you will get a prompt to enter a URL source (see the screenshot below). Type the http://repo666.ultrasn0w.com and tap on Add Source to add this repo if you haven’t already.
Step 3: Cydia will now automatically update your sources by following a series of automated steps. When the installation is complete search for “ultrasn0w 1.2” in Cydia, and install it. It will automatically unlock your iPhone so that you can use it with any carrier without any further action.
Step 4: Finally restart you iPhone and you should now have a completely unlocked iPhone 4, 3GS, 3G on iOS 4.2.1 with an untethered jailbreak!
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