Just hours ago, the Dev Team released an update to their popular jailbreak tools RedSn0w and PwnageTool. Those 2 are now fully compatible with iOS 4.3.3 and can be used safely to jailbreak Apple’s latest firmware.

RedSn0w 0.9.6rc15 will jailbreak any device on iOS 4.3.3 except for the iPad 2. This tutorial will show you how to jailbreak your iPhone running iOS 4.3.3 using UltraSn0w. If you have an iPod Touch or iPad, you may follow this guide as well because the steps are identical…

RedSn0w will work with both Mac and Windows.

Step 1: Make sure your iPhone is on the latest iOS 4.3.3 software. Make sure iTunes is up to date.

Step 2: Download RedSn0w 0.9.6rc15 from our iPhone downloads section. Also download the correct iOS 4.3.3 firmware for your device. Leave those items on your desktop for convenience.

Step 3: Launch RedSn0w and browse for the firmware you downloaded in step 2.

Step 4: RedSn0w will ask you if your iPhone is a newer model. Read the explanation provided by RedSn0w and select Yes or No. Click Next to continue.

Step 5: RedSn0w will now be preparing the jailbreak data, which should take a few seconds. When it’s done, It will give you several options. Make sure to select Install Cydia. You may select other features such as Custom Boot Logo, but we will not go there in this tutorial. Click Next to continue.

Step 6: RedSn0w is now asking you to make sure your device is both off and connected to your computer. Click Next to continue.

Step 7: You will now have to get your iPhone in DFU mode. Simply follow the onscreen instructions to proceed.

Step 8: If you have successfully entered DFU mode, RedSn0w will start the jailbreak process. You should see a bunch of weird code running through your iPhone screen. It’s all good. This should take a couple minutes. When done, your iPhone will reboot.

You should now have the Cydia icon on your iPhone springboard. That’s it. The whole process shouldn’t take more than a few minutes.

Feel free to ask if you have any question. We’re here to help.

  • Pedro

    You a file like this:

    file_name.ZIP, correct? press F2 and replace ZIP for IPSW.

    • Kevin

      the file name looks like this…. Iphone2,1_4.3.3_8J2_restore where would i replace the .zip at?

      • Lgl81

        Just rename the file by changing the extension from ZIP to IPSW.

      • Jeff

        In Win 7 go to folder options (do a start search) then View and uncheck the “hide known file extension” box. Then change the .zip to .IPSW. Good Luck

    • Randell

      When I downloaded the file it shows up with 25 smaller files but no ISPW file is ther or zip file I have been working on this for several hrs and I can not figure it out. I have a new 3gs firmware 4.3.3 8j2 modem firmware 05.16.02 Could use some help, I have windows 7 and there is not to many places to go for help. My restore ISPW is named Ipod2,1_4.2.1_8C148 Please help.

  • mac

    How come my iphone isn’t rebooting even though I just did a jailbreak on it? Does it usually take a while in order to reboot it?

    • max

      My Ipod touch 4 does the same, RedSn0w wait for the reboot and the screen of my ipod is white with weird diagonal lines moving up.

      • mac

        Well, my iphone’s screen didn’t do anything, just remained black. I forgot to mention that I just bought my iPhone (unlocked) from the internet, and I accidentally updated it to 4.3.3 with iTunes. Now I believe it’s locked! I don’t know if I’ll be able to unlock it or not, any suggestions on what to do next? Anyone?

  • Barry

    Is it better to update my jailbroke iphone 4 to 4.3.3 with Itunes and then (since it will not longer be jailbroke) follow the RedSn0w jailbreaking you suggest above
    Or is it better to use a jailbreaking program (RedSn0w?) to try to update the phone directly without un-jailbreaking it first?

    • Lgl81

      It’s better to do a clean restore to 4.3.3 with iTunes then jailbreak. But if you need to unlock, then you should pwnage tool instead of redsnow cos it keeps your baseband.

      • Barry

        Thanks a lot.

    • Lgl81

      It’s better to do a clean restore to 4.3.3 with iTunes then jb. But if you need to unlock, then you should use pwnage tool instead of redsnow cos it keeps your baseband.

      • Barry

        Thanks a lot

  • James

    Worked like a champ. however, to make space, i decided to delete a few app store apps and I can’t. Holding down and getting to wiggle doesn’t provide the option to delete, just to move. too tired to google effectively but haven’t found anything yet.

    • Lgl81

      If the apps are from app store, the cross should appear on the top left of the icon. If you don’t see it then those apps are from cydia and can only be deleted thru cydia packages.

  • mac

    Whenever I try and download RedSn0w 0.6.9rc 12 into my computer, it states that the site I’m looking for is no longer available. Is there another jailbreak RedSnow 0.9.6 site to go to if I’m trying to jailbreak iPhone 3g 4.2.1? Anybody?

    • Lgl81

      You can just dl the newest redsnow from the dl page on this blog.

  • liam

    urm i cant find the ipsw file we i browse mydesktop to the file 4.3.3 thingy !?!?!?

    • Make sure the file’s extension is .ipsw

      • liam

        how ?

      • liam

        i mean how do u do that ?!?!?!?!

    • Lgl81

      When you dl the from the dl page here, most of the time the extension is a ZIP file. Just rename the file changing the ZIP to IPSW.

      • liam

        ok i think my question wasnt precise enought how do i change it to IPSW after i unzipp it ?!?!?!?! im not really good with computers sr

  • Lgl81

    Oh. You don’t unzip the ZIP file. Once you dl the file, right click the file and rename. Change the .ZIP to .IPSW. You will get a prompt, just click ok an the file will become a apple firmware file.

    • liam

      thats what i dont get itsthat i dont get a prompt

      • Lgl81

        You sure you are just changing the extension and not the file name?

      • liam

        in the propeties it stills says that its zip file it doesnt cange it to ISPW

      • Lgl81

        I think you did it wrongly. In control panel, under folder options. Did you allow the the option that lets you see the file extension? Once you allow that, try redownloadin the file then change the .ZIP to .IPSW

    • liam

      i dont have that option

      • liam

        that hust might work brb

  • Lgl81

    Which os are you using? Mac, XP, Vista or Windows 7?

  • liam

    wi ndows 7

  • liam

    thx dude its working now

  • liam

    now the only thing id get is the serial number they ask my serial number is 829434 what week is that ?

  • Eric

    I have previously jailbroken my iPhone with jailbreakme.com, and i have several apps that I downloaded from Installous that I play often. After I use Redsn0w to jailbreak the newest software, will it delete the information from these apps or will they remain?

  • Twiggy

    I have a problem, I downloaded the 4.3.3 version for my iPhone 3GS n when i tried opening it with redsnow it didn’t work?

  • Twiggy

    Can someone help me? my iphone 3gs was updated to 4.3.3 aand its a 05.16.02 and I downloaded the zip file and it come out as “iPhone2,1_4.3.3_8J2_Restore” and doesnt say iPhone2,1_4.3.3_8J2_Restore.zip how can I change this? or how can redsn0w find it? Im also using windows 7 :/ please help me

    • Lgl81

      In control panel, under folder options. Did you allow the the option that lets you see the file extension? Once you allow that, try looking at the file again you should be able to change the .ZIP to .IPSW

  • Twiggy

    i did, so i might have to download it again right?

  • James

    Hi Lgl81,

    try this,

    right click, save as, iPhone2,1_4.3.3_8J2_Restore.ipsw

    it should work

  • James


    Thanks to the instruction, i manager to get into ” Downloading Jailbreak Data…” however, it jus stop there, and I don’t see weird wording.

    The status bar on the redsn0w screen is also not moving … now i don’t dare to cancel.

    What should I do ???

    Someone please advise.

    Thank ou.

    I manage to get into ” Download

  • James

    sad, I manage jailbreak and install “cydia” onto my iphone, but I cannot opened this apps.!!!!

    Help !!!

  • Twiggy

    what if my iphone doesnt have a SIM card?

  • Blub

    Will I lose all my apps again? can I also update to 4.3.3 without losing jailbreak?

  • Sergeant HCR


    I have a iPhone 3GS with a jailbroken iOS3.1.3. Obviously I really need to upgrade the OS to 4.3.3. Is there anything I should keep in mind by upgrading from a really old iOS and then jailbraking it? will I have to reinstall all my paid apps? and redo my settings/wallpaper etc?

    I don’t need to unlock it or anything.


  • LowKKSS

    While installing ,Cydia app does not work cos you are running out of iphone system space (1Gbyte) and it’s interrupted while Cydia is installing.

    Thisis mainly due to previously jailbroken iphone before you install redsnow . Updating ios4.3.3 will get the old cydia remain in the system space and redsnow won’t move the neccessary files to make space for new Cydia 1.1 .Consequently you need to backup and perfrom a full fresh restore from itune. Then restore from your backups. All the Apps will be wiped out, so do remember to backup b4 you do a full restore.

    And even if a Cydia.app icon is visible( maybe sometime white cydia), Cydia is quitting right after you launch it.(broken file link)

  • ed

    my iphone 4 i stuck in dfu mode and it is writen downloading jailbreak data, and in redsnov windov is writen uploading ram disk

  • ajinkya

    plz sumone help me….
    my i phone 3gs is stuck…!!! plz plz help
    it all stated wen i tried to upgrade my ios 4.2.1wid bb 6.15.00 unthetered jailbreak it did not so i put it in dfu mode n downloaded the software 4.3.3 n it stated to restore but thn it gives an error say wat should i do..

  • ajinkya

    my i phone cannot be read by the computer n is stuck in the usb itunes connect image… can sumone plz plz help i took an hell lot of effort to get this phone so plzzzzzzzzzzzz sum one…..

  • persephone

    Tried to JB awhile ago but it’s just struck at “Downloading Jailbreak Data”. The status bar on redsn0w screen just stopped moving with indication “Uploading ramdisk”.

    What should I do? SOS please…

    • Brotato

      Same problem here i have no idea to fix it

  • 6ftDiva

    I tried to change the zip to ipsw and it’s not working for me..that’s the only thing that is holding me up

    • Lgl81

      I guess you rename the file instead of just changing the extension.

      Do you see .ZIP at the end of the name of the file or you don’t see the extension?

      • 6ftdiva

        Yes I did and I tried to rename it to Ipsw and it wouldnt let me

      • Lgl81

        What do you mean it wouldn’t let you? It prompt you whether you really want to change and you click yes.

  • Gorali

    Install the new IOS 4.3.3 and jailbrake with redsn0w_win_0.9.6rc16, but now i cant open Cydia. Cydia icon white without logo and dont open Cydia. Open and close everytime i try to open it. 🙁

    Anyone can help me? Pls.. I tried to rejail with same guide again but nothing happens. 🙁 Still same problem.

    • HomersDK

      I also have this problem now (not earlier).
      The solution is to restore in iTunes (after it made a backup copy), then don’t sync yet from last backup in iTunes (close it).
      Do the JB magic (I used redsn0w) and Cydia icon will be fine, install the hackulo stuff in cydia and then sync from last backup.

      Yes it will copy all your music, movies, pictures and programs over to iPhone again, but take a walk and buy an icescream while it does that 😉

  • Messi

    I am unable to delete the app in the middle of installing aftet update to 4.3.3 which is able to do so during the 4.3.1.

    Any advise?

  • HomersDK

    I’m unable to update to 4.3.3 in iTunes.
    I get an unknown error (3194) and “more info” points to a page with what I can do to try to fix, but nothing helps.
    Never had any problems before updating the iOS in iTunes.

    Any suggestions?


  • HomersDK

    Sorry, forgot.
    Got latest iTunes installed (Win7 64 bit) and iPhone 3GS (old model).

  • Gin

    I jailbroke my iphone4 wtih redsnow running 4.3.2. After updating to 4.3.3, cydia was gone. I then tried to rejailbreak with resn0w 0.9.6rc15, but I couldn’t get in to DFU mode. I have done a few clean jailbreaking for my friends so I am certain I followed the steps right. Please help

  • Alpheus

    It better to do this on Mozilla Firefox if you have windows cause it would download everything correctly without having to change everything

  • Alpheus

    It worked for me all I did was download the Firmware and the Redsn0w on Firefox and everything is working!

  • HomersDK

    My problem about updating to 4.3.3 in iTunes is fixed.
    I found an Apple entry in the hosts file (think umbrella made it) and after deleting the entry, the update went fine and also the redsnow JB 🙂

  • HomersDK

    I also have this problem now (not earlier).
    The solution is to restore in iTunes (after it made a backup copy), then don’t sync yet from last backup in iTunes (close it).
    Do the JB magic (I used redsn0w) and Cydia icon will be fine, install the hackulo stuff in cydia and then sync from last backup.

    Yes it will copy all your music, movies, pictures and programs over to iPhone again, but take a walk and buy an icescream while it does that 😉

  • abdi

    hi everyone, maybe someone hier can help me please, my jailbroken iphone 4 (4.3.3 BB 4.10.01) rebooting (Boot time) take long time arround 13 min, i got this problem when i deleted one dreamboard theme in cydia ( the theme which was default on my iphone), after deleting i checked that theme on dreamboard, the theme was not anymore on dreamboard page but u had option to choose it again, i just by accident choose that theme, after that i got this problem (booting problem), do u have please one solution for my problem? thx


  • Marcelo


    Just did all the steps above and all went really well..
    My only problem is: no carrier can be found! in other words: all is working fine, except that the iPhone does not find any network to connect to use my phone to make calls..

    Any suggestions?? The only call that I can make is emergency calls..

    Thanks in advance…

  • christian

    ciao a tutti ho un iphone 3gs con sistema 4.3.3 aggiornato tramite itunes vorrei sbloccarlo .ho scaricato il file iphone2,1_4.3.3_8j2_restore.zip ma quando apro il programma redsn….non mi trova il file .ipsw vorrei sapere come devo fare .ho provato a rinominarlo ma niente.uso windows 7

  • d

    If I jailbreak using a downloaded restore file, will I lose my apps, pictures, music, etc? My music library is spread out over 3 computers so I need to be able to preserve it during jailbreak.

  • Jake

    i downloaded everything after i select firmware i hit next the immediatly says an unexpected error has occured every time i click next

  • Mac1001

    Yes it worked, i restored it to original factory settings and it worked…the only problem is that you have to add all your data, songs and pictures back…

  • Shadex

    I have recently tried JBing with the redsn0w copy and it keeps coming up with ” unable to recognize specified ipsw ”

    I am running a fresh copy of 4.3.3 and i cant find anywhere to troubleshoot this problem so if anyone could help that would be great.

  • yusuffbhai

    i’m using firmware 4.2.1 version in my iphone 4.. may i select 4.3.3 firmware during selecting on redsnow….
    please help me…

  • Anonymous

    my Jailbreak works great for tethered internet however I can no longer properly sync my phone with itunes – any fixes? – I have iphone 3gs on 5.0
    thanks, Barry