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  • HowTo: Jailbreak iDevices Untethered (and preserve iPhone Baseband) with PwnageTool 4.2


    Step 1: Download PwnageTool 4.2 here. Also Download the appropriate 4.2.1 firmware bundle (available from Apple). For the walkthrough I used an AT&T iPhone 4.

    Step 2: Open PwnageTool and click 'Expert Mode' at the top, then click the device you'd like to jailbreak.



    Step 3: Click "Browse for IPSW and browse for the firmware bundle you downloaded (should be firmware 4.2.1)



    Step 4: Click 'General' and select functions as needed.
    • 'Activate the phone' - Hacktivates the phone if previously unlocked
    • 'Enable baseband update' - Performs the baseband update (DO NOT CHECK THIS IF YOU RELY ON A ULTRASNOW UNLOCK)
    • There are options to re-enable functionality, which are specifically for the iPhone 3G. If you need them, check them off.



    Step 5: Click the arrow to apply the changes.

    Step 6: Install custom packages and cydia sources as needed, then click build to save your custom IPSW file, you may be asked to enter your Mac OS user password.



    Step 7: When prompted, connect your device via USB and follow the instructions for entering DFU mode.

    Step 8: Open iTunes. iTunes will tell you it has detected a device in recovery mode. IMPORTANT: PRESS OPTION AND CLICK RESTORE. Do not simply press restore, this will upgrade your device to stock 4.2.1, and WILL upgrade your baseband (which is irreversible). A dialog box will open and allow you to choose the firmware bundle to restore with. Choose the custom created bundle.

    Step 9: Wait for the restore to complete, and enjoy your untethered jailbreak! Unlockers on an unlockable baseband can simply install ultrasn0w and unlock. Enjoy!
    This article was originally published in forum thread: HowTo: Jailbreak iDevices Untethered (and preserve iPhone Baseband) with PwnageTool 4.2 started by Matt Savoca View original post
    Comments 154 Comments
    1. jimmie geddes's Avatar
      jimmie geddes -
      I just did the whole process over again (created a custom firmware with pwnagetool) and Cydia still closes once I try to open it. I don't know if I'm supposed to be adding anything with sources and packages in the Cydia part of pwnagetool. I didn't see anything in all of the instructions.
    1. Simon's Avatar
      Simon -
      Are you restoring from a backup after restoring the custom firmware?
    1. jdm.accord's Avatar
      jdm.accord -
      can you use this to update to 4.2.1 from 4.1 running the iPad 6.15 BB or do you still have to build the custom firmware yourself using the minimal bundle as stated on the Dev Team Blog update #3?

      Edit: works well
    1. currocj's Avatar
      currocj -
      I apologize if this question was already addressed...

      I thought starting with 4.2.1, iOS began checking that the firmware version matched the baseband (as is not the case with most UltraSn0w capable devices where baseband is retained from previous versions).

      Did this change or did the latest jailbreak somehow circumvent or trick the baseband check?
    1. jimmie geddes's Avatar
      jimmie geddes -
      Quote Originally Posted by x98car View Post
      Are you restoring from a backup after restoring the custom firmware?
      No, setting up as a new phone.
    1. Simon's Avatar
      Simon -
      What type of iPhone do you have?
    1. jimmie geddes's Avatar
      jimmie geddes -
      iPhone 4.
    1. Simon's Avatar
      Simon -
      Weird, it should be working. What you are describing sounds like what occurs with a tethered jailbreak. But as long as you are using pwnage tool 4.2 it should be untethered. Have you given greenpoison rc6 a go?

      Quote Originally Posted by currocj View Post
      I apologize if this question was already addressed...

      I thought starting with 4.2.1, iOS began checking that the firmware version matched the baseband (as is not the case with most UltraSn0w capable devices where baseband is retained from previous versions).

      Did this change or did the latest jailbreak somehow circumvent or trick the baseband check?
      There never actually was a baseband check as previously thought.
      Twitter
    1. jimmie geddes's Avatar
      jimmie geddes -
      I've tried to restore it using the regular "restore iPhone" in iTunes (not custom firmware) but it won't restore, I'll get an error message. The only way I've been able to get my iPhone back is by using pwnage tool DFU mode with custom firmware (but Cydia doesn't work).
    1. Simon's Avatar
      Simon -
      Are you on official carrier or need to unlock? I am guessing the error you are getting is 1013?
    1. jimmie geddes's Avatar
      jimmie geddes -
      AT&T is my carrier, not unlocking. I'll try greenpoison.
    1. Simon's Avatar
      Simon -
      Restore to regular 4.2.1. After you get that 1013 error use greenpoison on it.

      Or if you dont want to get that error, open tiny umbrella, click advanced. Deselect the box that says set hosts to cydia on exit. Then close tiny umbrella and try the restore again.
    1. jimmie geddes's Avatar
      jimmie geddes -
      Quote Originally Posted by x98car View Post
      Restore to regular 4.2.1. After you get that 1013 error use greenpoison on it.

      Or if you dont want to get that error, open tiny umbrella, click advanced. Deselect the box that says set hosts to cydia on exit. Then close tiny umbrella and try the restore again.
      You're the man! Used greenposion per your directions and now have Cydia and iPhone working GREAT! Thanks again!
    1. Jay316's Avatar
      Jay316 -
      Can Fuzzyband be updated to work with the iPhone 4, or are we all just stood around in a queue waiting for the Dev's to release a downgrader/Updated Ultrasn0w?
    1. Simon's Avatar
      Simon -
      Quote Originally Posted by jimmie geddes View Post
      You're the man! Used greenposion per your directions and now have Cydia and iPhone working GREAT! Thanks again!
      no prob

      Quote Originally Posted by Jay316 View Post
      Can Fuzzyband be updated to work with the iPhone 4, or are we all just stood around in a queue waiting for the Dev's to release a downgrader/Updated Ultrasn0w?
      Not without a new exploit.
    1. jemar2169's Avatar
      jemar2169 -
      If you do this jailbreak and restore, would you lose all your data? so it's wiped clean?
    1. Simon's Avatar
      Simon -
      Yes, but you can restore from your backup after
    1. tallshorty's Avatar
      tallshorty -
      I'm a window user and want to preserve my baseband. My iphone 4G is already jailbroken on iOS 4.01. With my iPhone 3G I was able to upgrade firmware by simply restoring to a jailbroken custom IPSW. Can this still be done now? If so, can someone upload their custom 4.2.1 IPSW for us window user?
    1. tallshorty's Avatar
      tallshorty -
      Man, MMi is really behind on the news. For window users, use Snowbreeze 2.2r3 to perform untethered jailbreak and preserve baseband:

      www.ih8snow.com
    1. aamodr's Avatar
      aamodr -
      I did the jailbreak and unlock as instructed .. The problem is I find that my push notification is not working at all . I need to manually check in to check my mail,facebook updates, and whatsapp, can anyone please help me out??

      And my emoticons does not seem to show up on the add keyboard screen ????

      And my emoticons does not seem to show up on the add keyboard screen ????