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Jailbreak iOS 4.3.1 on Mac OS X Using PwnageTool 4.3 [Untethered] [How-To Guide]

Here is a step-by-step guide to jailbreak your iPhone 4/3GS, iPod Touch 4G/3G, 1st-Gen iPad and Apple TV 2G on iOS 4.3.1 using PwnageTool 4.3. Just like Sn0wbreeze 2.5 on Windows, you can use PwnageTool 4.3 on Mac OS X to create iOS 4.3.1 custom IPSW for your iDevice. Restoring this custom IPSW on your iPhone will not only jailbreak it on iOS 4.3.1 untethered but will also preserve your current baseband for unlocking purpose. If you do not rely on unlocked iPhone, the best way to get untethered iOS 4.3.1 jailbreak is through Redsn0w 0.9.6RC9.

PwnageTool 4.3 (Main)

Supported iDevices:

  • iPhone 4
  • iPhone 3GS (Old Bootrom)
  • iPhone 3GS (New Bootrom)
  • iPod Touch 4G
  • iPod Touch 3G
  • 1st-Gen iPad
  • Apple TV 2G

Steps to Create iOS 4.3.1 Custom IPSW with PwnageTool:

  1. Download and install iTunes 10.2.1 from here
  2. Download stock iOS 4.3.1 IPSW for your iPhone, iPod Touch or iPad from here. If you are Apple TV 2G user, download stock iOS 4.3 IPSW for Apple TV 2G from here.
  3. iPhone 4 (GSM) » iPhone3,1_4.3.1_8G4_Restore.ipsw
    iPhone 3GS » iPhone2,1_4.3.1_8G4_Restore.ipsw
    iPod Touch 4G » iPod4,1_4.3.1_8G4_Restore.ipsw
    iPod Touch 3G » iPod3,1_4.3.1_8G4_Restore.ipsw
    iPad (1st-Gen) » iPad1,1_4.3.1_8G4_Restore.ipsw
    Apple TV 2G » AppleTV2,1_4.3_8F202_Restore.ipsw

  4. Download PwnageTool 4.3 for Mac OS X from here
  5. Create a new folder on your desktop and name it iOS 4.3.1. Place PwnageTool and iOS 4.3.1 IPSW file in this directory.
  6. iOS 4.3.1 Stock IPSW and PwnageTool

  7. Launch PwnageTool app and select Expert Mode. Now select your iDevice name from the list of available iDevices. In this case, i have chosen iPhone™ 3GS, 4 as i will be jailbreaking my iPhone 4 on iOS 4.3.1. If you have an iPod Touch, choose the iPod Touch™ 3G, 4G and if you are an iPad or Apple TV 2G user, choose iPad™, AppleTV™ 2G option. Once selected, click on the Next button at the bottom-right of PwnageTool.
  8. PwnageTool 4.3 (Select iDevice)

  9. Now PwnageTool will automatically detect stock iOS 4.3.1 IPSW(s) present on your desktop. If for some reason PwnageTool fails to detect the IPSW for your iDevice, click on the Browse button and select stock iOS 4.3.1 IPSW for your iDevice manually. I am choosing iPhone3,1_4.3.1_8G4_Restore.ipsw as i will be jailbreaking my iPhone 4 on iOS 4.3.1.
  10. PwnageTool 4.3 (Select IPSW)

  11. Select General tab and click on the Next button.
  12. PwnageTool 4.3 (Select General)

  13. If you rely on an unlocked iPhone, choose Activate the iPhone. If you have a legitimate official carrier SIM card, simply un-check Activate the iPhone option. All other check-boxes are optional and some features are disabled as they are natively available on that iDevice in iOS 4.3.1.
  14. PwnageTool 4.3 (Jailbreak Options)

  15. In the Download packages tab, first hit the Refresh button and then double-click on the OpenSSH to download the package.
  16. PwnageTool 4.3 (Download OpenSSH)

  17. Click on the Select packages tab and make sure OpenSSH is checked. Click on the Next button to continue.
  18. PwnageTool 4.3 (Select OpenSSH)

  19. Click on the Build tab followed by a click on Next button.
  20. PwnageTool 4.3 (Select Build)

  21. PwnageTool will prompt you for the location to save iOS 4.3.1 custom IPSW. Choose Desktop and click on the Save button.
  22. PwnageTool 4.3 (IPSW Save Location)

  23. Now wait while PwnageTool creates iOS 4.3.1 custom IPSW for your iPhone.
  24. PwnageTool 4.3 (Building IPSW)

  25. During the creation of custom IPSW of iOS 4.3.1, PwnageTool might prompt you to enter your Administrator password.
  26. PwnageTool 4.3 (Enter Admin Password)

  27. Once PwnageTool has created iOS 4.3.1 custom IPSW for your iDevice, use the following instructions to put it in DFU mode.
    • Turn off your iPhone completely
    • Press and hold the Home+Power button simultaneously for 10 seconds.
    • After 10 seconds, release the Power button but keep holding the Home button until PwnageTool detects your iDevice in DFU mode.

    PwnageTool 4.3 (DFU Mode)

  28. At this stage, you can find iOS 4.3.1 custom IPSW on your desktop.
  29. iPhone 4 (GSM) » iPhone3,1_4.3.1_8G4_Custom_Restore.ipsw
    iPhone 3GS » iPhone2,1_4.3.1_8G4_Custom_Restore.ipsw
    iPod Touch 4G » iPod4,1_4.3.1_8G4_Custom_Restore.ipsw
    iPod Touch 3G » iPod3,1_4.3.1_8G4_Custom_Restore.ipsw
    iPad (1st-Gen) » iPad1,1_4.3.1_8G4_Custom_Restore.ipsw
    Apple TV 2G » AppleTV2,1_4.3_8F202_Custom_Restore.ipsw

  30. Close the PwnageTool and follow the instructions below to restore iOS 4.3.1 custom IPSW on your iDevice.

Steps to Restore iOS 4.3.1 Custom IPSW on your iDevice:

  1. Open iTunes 10.2.1 on your Mac OS X
  2. Click on your device name from the side-panel to view the summary page.
  3. Select iDevice in iTunes

  4. You will see two buttons on the summary-panel i-e Check for Update and Restore. Hold down the ALT (Option) key and click on the Restore button.
  5. Check for Update & Restore

  6. Now select iOS 4.3.1 custom IPSW which you just created with PwnageTool 4.3. Once selected, click on Open button and wait while iTunes restore iOS 4.3.1 custom IPSW on your iDevice. Once custom IPSW has been restored successfully, your iDevice will reboot automatically.
  7. Restore iOS 4.3.1 Custom IPSW

Unlock, Enable Push Notifications, Fix YouTube & Install AppSync:

  1. If you rely on an unlocked iPhone, DO NOT install Ultrasn0w 1.2 from Cydia as Ultrasn0w for iOS 4.3.1 is different from all other firmwares. iPhone Dev-Team will soon release Ultrasn0w fix for iOS 4.3.1 as Cydia package update. Mean while, you can use this guide or this guide to enable Push Notifications and fix YouTube app on your iPhone using SAM. Lastly, install AppSync for iOS 4.3.1 using this guide.

Download Links:

Download iTunes 10.2.1 for Mac OS X
Download PwnageTool 4.3 for Mac OS X
Download stock iOS 4.3.1 IPSW for iPhone 4/3GS, iPod Touch 4G/3G, iPad 2/1st-Gen
Download iOS 4.2.1 (Build 8F202) for Apple TV 2G [Direct Link]

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Leave a message...

    rick p10 years, 1 month ago

    hi i’ve a problem… i recieved a iphone 3gs which was jailbroken with 4.1 firmware with no bluetooth, modem firware or imei. they are all grayed out. could you tell me what tool or prcess to use to correct this?

      Pramod10 years, 1 month ago

      Unfortunately none.
      Your BB is corrupt at the hardware level & so only a replacement of the same will help you resolve this issue. Take it to the nearest Apple Store & get it replaced.

    ZZ Top10 years, 6 months ago

    I did the custom IPSW using iREB and Skype still wont run/open. So I may have to revert to 4.2?

    thanks for the help maaan!

      Wolverine10 years, 6 months ago

      I confirmed it from my followers on Twitter. All of them have Skype working on their iOS 4.3.1 jailbroken iDevices.

        ZZ Top10 years, 6 months ago

        Both my friend’s and my 3gs iphones don’t though, it must be because we d’loaded it via Installus versus iTunes official!?

          Maverick10 years, 6 months ago

          This could be the reason. Why don’t you download it from App Store? It is FREE!

            ZZ Top10 years, 6 months ago

            Yeah I know! I just haven’t a credit card but I did register for the Apple ID, as far as that helps. So far just downgraded to 4.1 (TinyUmbrellas hadn’t 4.2) and so far so good! What a breakthrough having an iPhone + Skype;)

            Wolverine10 years, 6 months ago

            This might surprise you

    Andreas10 years, 6 months ago

    doesnt say anything! just my serial number!

    Andreas10 years, 6 months ago

    Tell me your email….pls!!

      Wolverine10 years, 6 months ago

      Ok. I just read ur email. Well this is the most strange case i hv ever seen. Lets sort it out. First download F0recast from here and tell me what baseband it shows!

    Andreas10 years, 6 months ago

    after jailbreaking my iphone 3gs i get no wifi no bluetooth no modem firmwire! any suggestions?

      Wolverine10 years, 6 months ago

      Not possible! Just send me the screenshot of your Settings~>About screen

        Taha10 years, 6 months ago

        hey fren,

        i have the same problem on my iphone 4 after loading custom ios modem firmware….i am stuck badly

          Maverick10 years, 6 months ago

          Can you tell me which tool you used to create custom IPSW?

    ZZ Top10 years, 6 months ago

    iOS went in fine but Skype (my #1 app) crashes when opening. Ideas?

      Wolverine10 years, 6 months ago

      I have informed @MuscleNerd about the issue. Thanks for telling :)

      william10 years, 6 months ago

      I’m Having same problem on an iphone 3gs no bt no, wifi, no modem firmware. i used redsnow 9.b6.rc9 baseband was 06.15.00. I keep getting a message that says restore needed. Weired. I’ve been doing this since they came out.

        Maverick10 years, 6 months ago

        Common man, you must have restored stock IPSW before using Redsn0w? Right?