Jailbreaking – The dream of every hacker. Every time when the new OS is released iPhone application developers are busy in testing their apps with the new API’s while the hackers work day and night to get it jailbroken and finally we get a news on almost every blog “ the new iPhone XX has been jailbroken “ . Similar is the case with our much awaited iOS 4 which comes with iPhone 4 . 
The iOS 4 has been finally jailbroken before the device carrying it could actually land up in the hands of users. And most of the users are ready to jailbreak their device, for those desperate users we have published the steps involved in jailbreaking iPhone .
The group of iPhone developer-hackers have released a tool to jailbreak iPhone , the tool is called Pwnage Tool 4.0 , recently it also received an update to 4.01 , just check out the Dev teams blog and you will get all the tools for download . PwnageTool 4.0 jailbreak tool creates custom ipsw firmware files for iOS 4.0 for iPhone 3GS, iPhone 3G and iPod touch 2G (non-MC model only) that updates your iPhone OS to iOS 4 without updating its baseband.
To jailbreak your iPhone you need to follow few steps:
The method can be used on devices which support iOS 4 , the devices which don’t support iOS4 ( like : iPhone 2G , iPod Touch , iPod 3G ) cannot be jailbroken with the Pwnage tool 4.01 , for them you need to use old Pwnage tool for jailbreaking .
Required Tools:
- Pwnage Tool 4.01
- iOS 4 original firmware of your device saved on computer
- For iPhone 3G or 2G iPod touch you need to use the device that mounts on firmware 3.1.2 or 3.1.3 , which has been jailbroken in past and unlocked with RedSn0w or Pwnage Tool , but not with Spirit .
- iTunes 9.2 installed on your Computer
How to Jailbreak iOS 4 using PwnageTool 4.01, follow the steps
1: Download the iTunes and install it.
2: Start iTunes 9.2 and sync your iPhone with your computer for backup.
3: Download PwnageTool 4.0/4.01 & the original iOS 4.0 for your version of iPhone or iPod touch. Copy all the files to your desktop.
4: Start PwnageTool 4.01 and select your device in it :
5: PwnageTool 4.01 will now automatically detect the correct firmware for your device.
6: Click on “No” when PwnageTool prompts “Do you have an iPhone contract that would activate normally through iTunes?”:
Clicking on “Yes” will update your baseband to the latest version. Click on “Yes” only if you are on an officially supported carrier like AT&T.
7: PwnageTool will now create the custom .ipsw file for your iPhone once you notice the screen which says “ihaz Success”, ensuring that the requested .ipsw file has been created successfully.
8: To restore your iPhone to this custom firmware 4.01 for your iPhone or iPod touch.
- Click on your phone icon from the sidebar in iTunes.
- Press and hold left “alt” button (”Shift” button on Windows) on the keyboard and then click on “Restore” (Not “Update” or “Check for Update”) button in the iTunes
- Now, release the “Shift” button.
iTunes will now ask you to select the location for your custom firmware 4.0. Select that custom .ipsw file and click “Open”.
9: Wait for a while till iTunes installs the new firmware 4.0 on your iPhone. After the installation is done, iPhone will restart automatically.
And yes now you have successfully jailbroken iPhone on iOS 4.
10: After jailbreaking and unlocking iOS 4, you can now restore all your settings, apps, contacts and photos to the newly installed firmware version iOS 4 by restoring the backup that you made in Step 2 from iTunes.
What do iPhone application developers feel about this release of Pwnage Tool , how does it affect iPhone application development , do you feel such releases are really a loss to iPhone application development in long run or do you feel such jailbreaks don’t really mean much to iPhone development .
