For those who don’t know, PwnageTool jailbreak tool has a capability to jailbreak your iPhone as well as preserved the unlockable baseband of it in order to allow you to unlock using the latest version of the iPhone Dev team’s Ultrasn0w carrier unlocking tool. PwnageTool utilizes Chronic Dev Team’s kernel based Greenpois0n exploit in order to achieved a permanent untethered jailbreak on iOS 4.2.1 that runs on iPhone 4, iPhone 3GS, iPhone 3G, iPod Touch 4G, iPod Touch 3G, iPad, AppleTV 2G, and the recently released Verizon CDMA iPhone 4.Now, we are going to show how to get untethered iOS 4.2.1 jailbreak on iPhones using PwnageTool 4.2 for Mac OS X as well as how to prepare your beloved iPhone for Ultrasn0w unlock.
Untethered Jailbreak iOS 4.2.1 As Well As Prepare An iPhone To Unlock Using PwnageTool 4.2:
Step 1: Download iPhone Dev Team’s PwnageTool 4.2 from this link. Make sure that your iPhone is running on iOS 4.2.1, or download the iOS 4.2.1 form this link. Load iTunes and sync your iDevice so you can backup. If you don’t want to backup with iTunes, you can do it manually.
Step 2: Launch PwnageTool. Click the “Expert” mode button and then select your iPhone. Click on the blue arrow to continue.
Step 3: Click on “Browse for IPSW” and then click on the blue arrow. A window will popup and you will need to select the firmware you downloaded in step 1.
Step 4: In the next window, you will need to select into several options. Click “General” and click the blue arrow to proceed in the next step.
A) Under the same window you can choose to activate your iPhone. In the next screen adjust the size of the partition or leave as it is and click on continue.
B) You should “activate” your iPhone if you are using an unofficial carrier and planning to unlock your iPhone.
C) You don’t need to select “activate” if you have an iPhone legitimately activated on an official carrier (like AT&T in the US)
D) You may need to increase the size of the root partition slightly. It is recommended to increase the size to about 695 MB. Click the blue arrow o continue.
Step 5: A Cydia Setting page will popup, hit the “download packages” tab, and hit refresh. This step will allow you to install any application that you want so when you restore your iPhone it will be packed with apps that you may use. Click the package you want to install and click “add to queue”. Click on the blue arrow to continue. All the apps you selected will be displayed in the “Select Packages” tab. Select OpenSSH as shown in the screen below. Ensure that everything is right and then click on the blue arrow to continue.
Step 6: Hit the “Build” and then click on the blue arrow to continue and start creating your custom firmware.
Step 7: The app will ask you where you want to save the custom firmware. It is advisable to save your IPSW on your desktop.
Step 8: Wait till the application successfully saved and built the custom firmware on your desktop.
Step 9: The PwnageTool will help you to put your iPhone into “DFU Mode”. Connect your iPhone to your computer turned ON and follow the onscreen instructions.
A) Press and hold the power and home buttons for 10 seconds.
B) Then release the power button and continue holding the home button for 10 seconds.
Step 10: When done, PwnageTool will tell you to go and restore in iTunes. Launch your iTunes (it will recognize a device in recovery mode), Click OK to continue. Hold the “Alt/Option” key and click “Restore” at the same time to restore your custom firmware. DO NOT click “Restore” without holding the “Alt/Option” key! A dialog box will pop up and you’ll be able to choose the custom IPSW file you created.
Step 11: iTunes will restore your iPhone using the customized iOS 4.2.1 firmware. Once done, the app will automatically reboot your iPhone.
Jailbreak 4.2.8/4.3.3 & Unlock iPhone 4,3Gs iPod Touch 4G/3G & iPad Untethered - Sn0wbreeze 2.7.1:
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