An untethered jailbreak for iOS 4.3.1 has been release by the Dev-Team on iPhone, iPod Touch, iPad1 and also AppleTV.
The following tutorial would help in jailbreaking iOS 4.3.1 using Pwnage Tool 4.3.It will work on the Macs only.Redsn0w or Sn0wbreeze can be used by the Windows users. Pwnage Tool should be used as described below:
- If someone is trying to unlock the iPhone 4 using the Ultrasn0w, then it is necessary that the baseband is not upgraded while updating the iOS firmware version 4.3.1.A custom IPSW would be created by PwnageTool. This will preserve the baseband at 1.59.00 during update.
- This is the only tool that could be used to jailbreak Apple TV 2G.
Starting iOS 4.3.1 Jailbreak:
First of all, there is a need to ensure that the latest version of iTunes installed on the computer. The iPhone or other iOS device would be restored with a custom IPSW. Therefore all the data on the iPhone should be backed up because the data on the iPhone would be deleted.
The Pwnage Tool can be downloaded from the links given below. The official iOS 4.3.1 firmware for the iOS device could be downloaded as well.
iOS 4.3.1 Firmware files are given below:
- iPhone 3GS: iPhone2,1_4.3.1_8G4_Restore.ipsw
- iPhone 4 GSM: iPhone3,1_4.3.1_8G4_Restore.ipsw
- iPod Touch 3G: iPod3,1_4.3.1_8G4_Restore.ipsw
- iPod Touch 4G: iPod4,1_4.3.1_8G4_Restore.ipsw
- iPad 1: iPad1,1_4.3.1_8G4_Restore.ipsw
How to Jailbreak iOS 4.3.1 using PwnageTool:
The downloaded file would be .DMG file. Double click the downloaded file and then copy PwnageTool 4.3 to the computer or Applications folder. Now connect he iPhone to the Mac with the help of dock connector to USB cable and launch PwnageTool.
When this warning appears, click OK to continue. The following screen will appear
Select the iOS device by clicking on the Expert Mode option at the top. To proceed, click the blue arrow, next screen will appear
Click general and then the Blue icon to continue.
If a SIM card that is being used is not from an official provider, then click the option “activate the phone”. If someone is an official cellular provider, then selecting this option would prevent from activating and making calls from the iPhone 4.
For creating custom .IPSW file, click the Back button and then click on build. Now click arrow to proceed as shown in the screen below.
Now select the location for saving the file and then click Save.
After a minute, a prompt for entering the computer’s password would appear. When the password is entered, the process of custom IPSW would be completed in almost then fifteen minutes
Now follow the instruction on the screen to continue the process. PwnageTool would show the option of putting the iOS device into the DFU mode. Selecting this option would result in restoring in iTunes.
If the process is completed successfully, the following message would be shown by the PwnageTool. In case the process is not done correctly, don’t worry. Just go through the process once again patiently.
Note: The screen would remain blank when the iPhone is in DFU mode and it is connected and ON. For detecting the iPhone automatically, just quit PwnageTool and launch iTunes.
The last step is to press Alt/Option key on Mac’s keyboard and then click Restore. At the end, browse for the custom IPSW file that has just been created.
Warning: Don’t select the stock firmware because it might result in irreversibly upgrading the iPhone’s firmware.
When the process is completed successfully, all the data will be restored via iTunes. The iPhone will be restarted with the installed Cydia.
The iPhone could not be unlocked on iOS 4.3.1 because the Ultrasn0w update has not been released.