iOS 4.3 Jailbroken using PwnageTool on First Day [Tethered Jailbreak Guide]

iOS 4.3 PwnageTool Bundles to  for iPhone 3G, 4 and iPad has been just released to create custom firmware. You can jailbreak and restore your idevice on iOS 4.3 with PwnageTool. As it is an tethered jailbreak for iPhone 4, 3GS (New Bootrom), we have provided steps for tethered boot your idevice. For  OLD Bootrom iPhone 3GS it is Untethered jailbreak.

Prerequisites:

1. Download Download PwnageTool 4.2 for Mac
2. Download the PwnageTool iOS 4.3 files according to your device:
   • iPhone 4
   • iPhone 3GS (New Bootrom)
   • iPhone 3GS (Old Bootrom)
   • iPad
3. Download iTunes 10.2.1 for Windows and Mac
4. Download  iOS 4.3 [Direct Links]
   
   • iPhone 4 (GSM)
   • iPhone 3GS
   • iPad 2
   • iPad
   • iPod touch 3G
   • iPod touch 4G
   • Apple TV 4.2 (8F191m)
5. Updated Universal Ramdisk Fixer

Copy all the above downloads in a folder on your desktop.

Modifying PwnageTool

Step 1:Extract the .zip folder downloaded in step 2 above, and copy the budle files to your desktop

• iPhone3,1_4.3_8F190.bundle (for iPhone 4)
• iPhone2,1_4.3_8F190_NEWbootrom.bundle (for iPhone 3GS New Bootrom)
• iPhone2,1_4.3_8F190_oldbootrom.bundle (for iPhone 3GS Old Bootrom)
• iPad1,1_4.3_8F190.bundle (for iPad)

Step 2:Download PwnageTool 4.2 and copy it to your desktop. Right click, and then click on “Show Package Contents”

Step 3: Copy the .bundle file to PwnageTool.app/Content/Resources/FirmwareBundles/

Step 4:Copy info.plist inside PwnageTool.app/Content/Resources/CustomPackages/CydiaInstaller.bundle/   (IMPORTANT IF YOU WANT CYDIA IN YOUR IPSW)

Creating Custom Ramdisk for iOS 4.3 Custom Firmware

Step 5: Install the universal Ramdisk fixer downloaded from above . This is important because Ramdisk in the current version of PwnageTool is broken. This Universal Ramdisk Maker patches it correctly for iOS 4.3 firmware.

Create Custom files for iOS 4.3 with PwnageTool

Step 6: Launch iTunes 10.2.1 and sync your iPhone, iPad  with your Mac so that it backs-up important data including apps, settings, music, contacts and photos.

Step 7: Now double click to start PwnageTool. Select Expert Mode from the top menu bar and then select your device (iPhone 3GS, 3G, iPhone 4, iPad). Click the arrow button at the bottom to continue.

Step 8: Click “Browse for IPSW” button and then select your firmware from the folder where you have saved it.

Step 9: You will see multiple options as shown in the figure below. Click the ‘Build’ button to start the pwnage process for creating custom firmware.

Step 10: PwnageTool will now create the custom .ipsw file for your idevice. You will be prompted to save custom .ipsw firmware file. Save it to the desktop. It might take 10-15 minutes for building custom firmware, so be patient.

Step 11: Now you need to restore your iPhone to this custom firmware 4.3 for your iPhone or iPod touch. For doing this, click on your phone icon from the sidebar in iTunes. Press and hold left “alt” button on the keyboard and then click on ‘Restore” (Not “Update” or “Check for Update’) button in the iTunes. Now, release the “Shift” button.

Step 12: iTunes will now prompt you to select the location for your custom firmware 4.3 Once your iPhone is successfully in DFU mode.

Step 13: Once In iTunes, hold the Alt/Option key and click Restore.

Step 14: Now select the custom IPSW that was created and click the Choose button. Wait for a while till iTunes installs the new firmware 4.1 on your iPhone. After the installation is done, iPhone will restart automatically.
You have now successfully jailbroken iPhone, iPod Touch, iPad running iOS 4.3 GM.

Booting in a Tethered Mode after Jailbreaking iOS device

As of now, there is no untethered iOS 4.3 jailbreak so, you need to boot your idevice in tethered mode. Here are the steps for tethered boot for your iPhone, iPod touch and iPad.

Step 15: Download tetheredboot.zip utility for Mac and unzip in a new folder ‘tetheredboot’ on your desktop.

Step 16:Create a copy of iOS 4.3, change its file extension from .ipsw to .zip, and then extract this .zip file.

Step 17: Navigate to /Firmware/dfu/ and then copy files kernelcache.release.n90 and iBSS.n90ap.RELEASE.dfuand move them to folder “tetheredboot” (refer step 1).

Step 18: Turn off your iOS device, and start Terminal on and execute the following commands:
Sudo -s
enter your administrator password, then:
/Users/JeffM/Downloads/tetheredboot/tetheredboot
/Users/JeffM/Downloads/tetheredboot/iBSS.n90ap.RELEASE.dfu
/Users/JeffM/Downloads/tetheredboot/kernelcache.release.n90

Step 19: Make sure you replace “admin” with the name of the directory on your Mac. You will then be prompted to enter DFU mode. Now follow the following steps to enter DFU mode:

• Hold Power and Home buttons for 10 seconds
• Release the Power button but continue holding the Home button for 10 more seconds
• You device should now be in DFU mode

Your device will now reboot. Your jailbroken iPhone, iPad or iPod touch will then be booted in a tethered