Yesterday iPhone Dev Team released PwnageTool 4.1 for those who want to update thier idevices to latest iOS 4.1 while preserving the baseband to unlock their idevices using the Ultrasnow 1.1. If you have already updated to iOS 4.1, the ultrasnow will not work for you.
However if you want jailbreak only, you can also use Greenpoison or Limera1in for iPhone 4, 3GS, iPad, iPod on iOS 4.1. Those users who have saved the SHSH blobs of iOS 4.0 or beyond and they have upgraded their idevices to iOS 4.1, they can downgrade to iOS 4.0 and then use this method to jailbreak and unlock the iOS 4.1.
Here is the complete step by step guide to jailbreak iPhone on iOS 4.1 with PwnageTool:
Step 1: Download the PwnageTool 4.1 and iOS 4.1 for your iPhone (links at the bottom of this post).
Step 2: Download the latest version of iTunes and install it and reboot your PC.
Step 3: Backup all the contents on your iPhone before starting the actual jailbreak process. After the backup is completed, close iTunes and leave you iPhone connected via USB.
Step 4: Launch PwnagTool and select either Expert Mode or Normal Mode. We will go with Expert Mode.
Step 5: Now select your iPhone and click the blue arrow to continue.
Step 6: Browser for iPSW file (iOS 4.1) which you have already downloaded as mentioned in step 1.
Step 7: Now you will be presented several options. Select “General” and press blue arrow to continue.
Step 8: Under General Settings, select ‘Activate the Phone’ if you are on unofficial carrier and want to unlock your idevice.
Step 9: Under Cydia Settings, download the packages which you want to preinstall and add to queue. You can skip this step too.
Step 10. Now you are on Custom Package Settings Page. Select the Cydia Installer and continue the process.
Step 11. Now hit the Build button to cook the custom firmware and save it on your PC.
Step 12. Put your iPhone into DFU mode. PwnageTool will help in this process. Follow the onscreen instructions for this purpose.
Step 13: After the iPhone is in DFU mode, launch iTunes and it will tell you it has found an iPhone in recovery mode. Press OK to continue.
Step 14: To install the custom cooked firmware, press the Alt/Option key and click on “Restore” in iTunes.
Step 15: Now wait for few minutes until iTunes does its job. The iPhone will reboot after it has been restored successfully.
Enjoy jailbreakd iPhone 3G/3GS/4 on iOS 4.1 while preserving the baseband.
- Download PwnageTool 4.1
- Download iOS 4.1 for your iDevice [Direct Download Links]