PwnageTool 4.2 For Mac: iOS 4.2.1 Untethered Jailbreak For iPhone, iPad, iPod Touch & Apple TV 2G Released; Fixes iBooks Problem

Jailbreak iOS 4 on iPhone 3GS

iPhone Dev team have just released PwnageTool 4.2 for iOS 4.2.1 that incorporates the untether exploit used by Chronic Dev Team in greenpois0n that was released few days back.

PwnageTool 4.2 will allow iPhone users to safely restore to a pre-jailbroken iOS 4.2.1 firmware and retain their current baseband so that they can use Ultrasn0w to unlock their GSM iPhone. PwnageTool 4.2 also includes fixes for iBooks issue that we had reported earlier and Wi-Fi problem on Apple TV 2G.

Dev Team has provided the following details in a blog post:

What’s in a name?  Well in the case of an HFS volume name on iOS, an untether exploit — as the Chronic Dev Team revealed last week with an untether for the 4.2.1 jailbreak, which had previously been a tethered JB for most recent devices since 4.2.1’s release in November.  With their permission, we’ve incorporated their 4.2.1 “feedface” untether into today’s PwnageTool 4.2.  This means iPhone unlockers can safely restore to a custom 4.2.1 pre-jailbroken IPSW and retain their current baseband and unlock [..]

[..] PwnageTool also includes two very recent improvements to the 4.2.1 JB:  iBooks was just fixed by @comex and @pushfix last night so that it works as intended on DRMed books, and the wifi problem on AppleTV 2G was fixed by @nitotv, @DHowett, and @saurik.  Both of these fixes will also be available in upcoming Cydia package updates, so if you’re already jailbroken you can wait for those updates rather than restore and jailbreak again.

The various components to the 4.2.1 untether (including a second exploit involving Mach-o headers) were worked out by 0naj, posixninja, and pod2g, and a nice writeup by 0naj is available on the wiki. The actual injection method uses geohot’s limerain exploit for most devices.

PwnageTool 4.2 supports the following iOS devices for iOS 4.2.1:

Please note that jailbreaking your iDevice may void its warranty so proceed with caution and at your own risk. Please don’t forget to backup your iPhone before you proceed. You can refer to this post for instructions on how to backup your iPhone.

PwnageTool is available only for Mac users and you can download it from one of the mirror sites:

As always, please let us know how it goes and if you’re new to the jailbreaking world and wondering what to do after jailbreaking your iPhone, checkout our jailbreak apps category page to find out the apps you can install on your iPhone using the Cydia app, which is the App Store for jailbreak apps.

Update 1:

Windows users can checkout Sn0wbreeze 2.2 that has just been released by iH8sn0w.


Please note that Ultrasn0w 1.2 unlocks iPhone 4 baseband 01.59.00 and iPhone 3G/3GS basebands 04.26.08, 05.11.07, 05.12.01, 05.13.04 and 06.15.00.

iPad and iPod Touch users are better off using Greenpois0n as you don’t need to preserve baseband like iPhone users and also assuming that the iBooks problem is a non-issue for you.

[via Dev Team’s blog]

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  • Kyle

    I’m confused.. I have 4.1 with baseband 02.10.04. Can I unlock my iphone 4 finally? I’ve been waiting for months.. 🙁 I live in the Middle East and need it unlocked..

    • MK

      no not yet u have to wait

  • Coco

    Very nice. Well done. What about Windows users?

    • steve

      get a mac

      • Andrew

        Or use sn0wbreeze

  • r-tuda

    You people are the best but what’s up with The Mac and no Windows. It would be awesome if a windows version is drop.

  • V

    Windows Version???

  • Nadim

    Enough with the BS!!
    We appreciate the hard work n all, but all we need now is the UNLOCK! nothing else.

    i don’t believe we’ve all been waiting for months for this stupid unlock.

    • Jason

      Nxt time buy your phone opening day.

  • fas

    Please release the unlock as that is what is important right now.

  • Daniel

    I have iphone 4 running 4.2.1 with baseband 03.10.01, can I use this to jailbreak and unlock. I had to do a restore and lost my unlock. I’m dyin over here. Oh and of course a huge thank you to the DEV TEAM for all their work!

    • riana

      Daniel’s comment: I have iphone 4 running 4.2.1 with baseband 03.10.01, can I use this to jailbreak and unlock. I had to do a restore and lost my unlock. I’m dyin over here. Oh and of course a huge thank you to the DEV TEAM for all their work!

      My iPhone have the sme specs….. what did you do to jailbreak???

  • William of Orange

    Big credit and thanks for the hard work these guys out into finding a JB. If it was not for people like them we would be stuck with a basic iPhone and getting governed by Steve Jobs & the Apple Crew…..

  • Lavender

    YIPPEE!!! Politely waiting for the Windows version now…
    -3GS new bootrom unlocker

  • Magdy Youssef

    I appreciate the hard work but we are all stuck with the base band 3.10 on Iphone 4 , please we need to unlock rather than jailbreak for now .
    Thanks Dev Team

  • ricosuave

    “;..;” you shall not unclock! …we’re doomed…


    my baseband is 01.59.00 im on 4.2.1. i just use tiny umbrella everytime i jb.

  • Crazy Asylum

    I’m running 4.0 unlocked, so this doesn’t really effect me, but good work regardless.

    And for everyone complaining about an unlock, you more than welcome to find your own, but you wouldn’t need it if you went stupid enough to update or you could have just bought a factory.

  • Yo Mama

    Oracle VM Virtuabox (or is it virtualbox?). Look it up and run OSX on your Windows machine… And stop complaining!

  • Ciprian Biris

    for windows u have sn0wbreeze 2.2

  • Ciprian Biris

    it’s just released

  • Curious

    where do i download the IPSW for 4.2?

  • trekerdwarf

    iam using iphone 4 on 4.1 preserved the baseband with tiny umbrella updated with out any probs unlocked with ultrasnow.
    well done dev team u r the best

  • affe

    please Dev Team, we need unlock 03.10.01

  • giftson

    really your website great useful………thanks a lot……

  • Jeez, all the people complaining that they unlock, not jailbreak… Um, how do you think you install the unlock?? Without jailbreaking there IS no unlock.

    • tt

      ::: thumbs up :::

  • ifonix

    DEV TEAM did it again..!
    thanx guy’s for the good work and the will to share it for free.

    what about GPS problems on the 3GS BB 06.15.00??
    any fix coming soon??

  • Macguy

    If I use Pwnagetool, will I keep all my data and jailbreaked apps already installed on my iPhone?

  • BlackHawkguy

    Thanks Dev Team for all the hard work! Pwnage tool worked flawlessly, just like it always has in the past.

  • Brett

    cant use my sim, i keep getting 1 bar with no network or cellular data

  • Meidas

    HELP!! I just used this PwnageTool 4.2 to restore iphone 4 to 4.2.1 firmware without upgrading base band. Everything seemed ok unless it came to restore data from backup. After 10 minutes of restoring (had much data – photos, videos) it gave me error: Can not backup, because backup can not be saved to computer. iPhone 4 is now on 4.2.1 software but all my data (contacts, calendar, sms, etc.) is missing. I tried use restore button from itunes but it started downloading iOS firware from Apple. I assume apple wants to restore iOS as well, upgrading my basebang. I am unlocker, so cannot let this happen. How can I restore my data without restoring iOS again?

  • Hassan


    Great work. I have bought my moble frm at&t and i have travelled to ME. now i am running with locked iphone 4. so what about the Unlock?

  • Joe

    Hello All,

    I need some help. My son tried to ‘help’ me by upgrading my iPhone 3G to 4.2.1 and then jailbreaking it using redsn0w 0.9.6b6. He used ultrasn0w to upgrade the baseband to 06.15. The phone icon was not on the springboard when he was finished, so he decided to update via iTunes. That completely screwed everything up and now my phone doesn’t work at all.

    I am hoping someone can really help me out with this. I don’t care what version firmware my phone is using, I just want it to work.


  • Justin

    I keep getting can’t restore! your phone isn’t the right build??? kinna

  • Katana Burner

    Yeah this site sucks big time cause all of your frickin links are busted to get the pwnage tool. FIX IT! And yes I’ve attempted this on three computers (2 macs and 1 pc).

  • Hi,

    I just jailbroke my Iphone 3G with pwnagetool to be able to unlock it from AT&T. It worked fine at first but after a while something happened to WiFi. Now I can’t connect to any networks while using WiFi. I’ve tried basically everything I can think of… reseting the network settings, turning the phone on and off… I’m running out of options, any tips?