The Dev Team just released a jailbreak for iPhone iOS 4.3.1, compliments of hacker i0n1c. This jailbreak will work with the iPhone 4, iPhone 3GS, iPod Touch 4G, iPod Touch 3G, iPad 1, and Apple TV 2nd generation.

In this tutorial, we will show you how to use PwnageTool to jailbreak your iPhone 4.3.1 while preserving your baseband. PwnageTool is a Mac only tool and is the only way to preserve your baseband to make sure you can unlock later on…

Before you go any further, please make sure to read everything in this post, especially if you rely on an unlock.

Step 1: Download PwnageTool from our iPhone downloads section. Also download the iOS firmware for your device. Save both files on your desktop.

Step 2: Launch PwnageTool and agree to the warning by clicking OK.

Step 3: Select your device and click the blue arrow to continue.

Step 4: Select “Expert Mode”. PwnageTool should offer you the option to use the firmware you downloaded in step 1, or to browse for a firmware on your computer. If you downloaded it to your desktop, PwnageTool should find it for you automatically. Select the firmware and click the blue arrow to continue.

Step 5: Select “General” and click the blue arrow to continue.

Step 6: If you are on an official carrier (ie AT&T in the US). unselect “Activate the phone”, and move the root partition to somewhere around 1,000 MB. Click the blue arrow to continue.

Step 7: You will now be taken to the Cydia settings. From here, you can select packages to have pre-installed on your jailbroken iPhone. This is a great way to install jailbreak apps directly, which will save you time later on. For this tutorial, we will not install any package. Click the blue arrow to continue.

Step 8: You will now be taken to the “Custom Packages Settings”. Make sure “Cydia Installer” in selected. Click the blue arrow to continue.

Step 9: Select “Build” and click the blue arrow to continue.

Step 10: Select a location to save your custom iPSW. I suggest saving to the dektop. PwnageTool will now build your custom firmware, which might take a few minutes.

Step 11: Once done, PwnageTool will ask you to conenct your iPhone to your computer in order to enter DFU mode. Just plug your iPhone in.

Step 12: PwnageTool will now help you to enter DFU mode. Simply follow the instructions on the screen. Hold the Power and Home button together for 10 seconds. Release the Power button while still holding the Home button for 10 seconds. Your iPhone should enter DFU mode and PwnageTool should let you know you successfully entered DFU mode.

Step 13: At this point, all you need to do is to launch iTunes, which should tell you it has detected an iPhone in recovery mode.Click OK to confirm.

Step 14: Still in iTunes, hold the Option/Alt key on your Mac while clicking on Restore. Make sure you are holding the Option key. iTunes will give you the option to select a firmware to restore to. Select the custom ISPW firmware you created and saved in step 10.

Step 15: iTunes will now restore your iPhone using the custom IPSW. It’s probably going to take a few minutes. When it’s done, your iPhone will be jailbroken and running iOS 4.3.1. You should now have Cydia on your iPhone springboard. Congrats, you just jailbroke your iPhone.

  • Jason

    Can we use this on window??

    • HellNevel

      Nopp. Mac only. Use Sn0wbreeze on windows ( it is released fir 4.3.1 )

    • wlj3004

      use redsnow.

  • Manoj

    does this method update the baseband?

    • HellNevel

      No it does not.

  • Almymon

    I lost my carrier it’s FIDO, in canada .
    unselect “Activate the phone.

    What i have to do?

  • Almymon

    it’s fixed .thanks

  • Ubicray

    !!!ATTENTION!!!
    Check out ih8sn0w’s site…sn0wbreeze 2.5 is released for 4.3.1

  • KD

    Can I unlock my i4 after doing this? Its currently unlocked and on IOS 4.0

  • hazaro

    ok its done, cydia is on there. Can i now restore from a previous backup of my ipod (which was not jailbroken at the time) to get my mail and stuff back?

  • azharhamzahya

    Sweet!!TYVM Dev team

  • Manoj

    do i need to run TinyUmbrella program in the background while restoring the FW in itunes?

  • ddNNdd

    this is bullshit,

    you can use resdnow, but you cant preserve your baseband
    you can use pwnagetool, but you need Mac
    you can use snowbreeze, but you cant preserve your baseband

    :S

    how about the unlock? still working?

  • Noisebag

    what about the ipad2?

  • G

    im getting error 1601 on itune. help

  • Jockman12

    will doing this erase all my contacts, music, pictures texts etc?? PLEASE ADVISE =)

    • phuuuunk

      sync it before..

      • Jockman12

        and the how do i get it all back after the jailbreak??

  • Colly

    Works as always. Thanks for the tutorial!!!!!

  • TMIA

    In the Restore step, do you restore from a backup or from a fresh new restore (factory)?

    • scottilmnc

      Depends on what you want. If you want to keep all your stuff you’ve already got on there then restore from backup. If you want to wipe your phone clean than do a new restore

      • TMIA

        I’ve heard restoring from new is better to avoid any glitches with the JB, true?

      • TMIA

        I’ve heard restoring from new is better to avoid any glitches with the JB!

  • scottilmnc

    In step 6, what does re-enable functionality mean? I’m using an iphone 4 and I’m not unlocking. Do I have to select “multi-tasking” in order to be able to multi-task?

  • luis

    my pwnage tool says wrong firmware bundle,

  • Kevin

    Step 2 only searches for the firmware, and i have downloaded it and place it on the desktop. Am i missing something else? i’m using the iPhone 3gs with 4.3.1

  • Kevin

    correction step 4.

  • luis

    yea.. ive downloaded everything and pwnage tool doesnt want to read it, and i tried expert mode and it still says the same, wrong firmware bundle

  • Andrea

    My iPhone has been stuck on, “Restoring iPhone Software” when I selected the jailbroken firmware for the past 10 minutes now… What should I do??

    • leviboxer

      Past hour and several items for me, just stuck on restoring iPhone software in iTunes and just the apple logo and nearly completed bar on my phone.

      Any solutions out there or are we all stuck???

  • nez76

    I just purchased an iphone4 with its most updated firmware & IOS. I am not that familiar with Apple and wondering if this tool above will unlock the iphone and ipad 1 as well as jailbreak both?

  • Special K

    How do i make this work for my already jailbroken iPhone? What do i do so i wont loose anything?

  • Rabbit

    Got it working, YESSSSSS. (took two times but whos counting! as long as it does what it does)

  • Chris

    i’m running 4.3 on iphone 4 w/ baseband 3.10.0. can I unlock my fone finally? or do I wait for ultrasn0w update? which do I use?

  • nez76

    Yeayyyyyyyy got iphone 4 to jailbreak and unlock did ipad too…. Thank You:)

  • nez76

    Yeay! got iphone 4 to jailbreak and unlock did ipad too…. Thank You:)

  • RELLIS

    I’m also stuck on the last step. Progress bar on itunes is 99% finished. Progress bar on phone is 75% finished. And then……nothing.

  • xcanis

    me 2. 99% in iTunes, about 75% on the iPhone 4.
    I could not even install unjailbroken 4.3.1. error 21.
    I ended up going back to Apple store and played dumb.
    They were able to reinstall the IOS now at 4.3.1 not jailbroken.

    has anyone gotten past this ?

  • Ramin

    After the jailbreak I only have one bar for my reception, any quick fix please.

  • Oz

    Pwnage Tool now Runs over One Hour After i Select the Firmware i cannot Move to the Next step Need help pls.

  • RELLIS

    So I went and got 4.3.1 from Apple’s website directly and this time I got 99% on Itunes and 99% on Iphone. UGH. Why is this so hard. I see others are successful and it’s the same damn process.

  • German

    I also stuck on iPhono logo when restoring with custom fw. Can anyone help?

  • RELLIS

    So what I have a brick now? Nice thanks alot

  • foxy

    Didn’t work 4 me. just sat there at the itunes 99% then nothing.. had to reboot

  • German

    Hey. I had the same error. What I did was to restore ir on another Mac. It worked for me 🙂

  • Listen !

    I was unsuccessful in 2 atemps . I kept getting some sort of error. I googled and read stories of people switching USB ports. I tried it and it worked. Try it . Or try this

    http://www.iphonedownloadblog.com/2011/03/12/fix-iphone-error-1013/

  • Nash

    Someone please help:

    I have a 3GS with 4.2.1 that I have jailbroken using Greenpois0n. I need an unlock to use it and hence I’m stuck. Its on baseband 05.15.04.

    Please tell me what I should do now.

    1. Should I wait for an unlock for 4.2.1
    OR
    2. Should I update to 4.3.1 and jailbreak it with Pwnage tool and hope for an unlock to come
    (If I plug into itunes to update to 4.3.1 will it update my baseband too ?)

    Please help.

    Thanks guys.

  • Mah Karim

    Hi , I am new at this . I have iphone 3GS baseband 5.16.02 and iOS 4.3.1. I travel lot and paying lots of money on the roaming. I need to unlock my phone. Can anmyone advice ? Help will be really appreciated

  • Marty

    I have a 3GS with 4.0.1 baseband is 05.13.04, jailbroken loong time ago.. I’m also on a PC. Need help on how to get 4.3.1 preserve baseband and unlock the phone please..

  • aj

    hey, when i try downloading pwnage tool i get this: “There is no application set to open the document “PwnageTool_4.1.3_Unlock_Edition.dmg.5994102.TPB.torrent”.
    im using a mac

    • Deadpool

      You need a torrent downloader like Vuze

  • Matt

    Update worked well, but I lost my carrier. Could anyone help me resolve this? Thanks

  • im ok with everything, but my operater is stuck on 1 bar??????? anyone know how to fix that????

  • Rellis

    Got stuck in recovery mode. Took phone to Apple store. They reset it to factory settings. Came home restored from backup. Jailbroke using Redsnow this time and it worked

  • jg

    Your link for the 4.3 Pawnage tool for mac does not work.

    • Deadpool

      The link is to a torrent file, download utorrent or Vuze

  • swj

    Does anyone know when we will be able to unlock iphone 4 with 4.10.01 baseband using OS 4.3.1?

    Thanks!

  • harrison brazell

    when i restore my iphone with the new firmware to jailbrake it will it still have all my contacts and photos and stuff on it?

    • Deadpool

      In the final step in iTunes when it asks if you want a factory restore or back-up. Do the restore from the back up you made just before jail breaking to restore those items.

  • harrison brazell

    i keep getting error 1601! how to i fix this so that i can successfully jailbrake my phone

  • Sin Star

    Any issues using this with the Verizon i phone ??

  • Dido

    IT SAYS “YOU DO NOT HAVE ENOUGH FREE SPACE”

    help me please, what do i do??