Up until now, RedSn0w 0.9.6 beta 1 only worked on Mac, but the Dev Team just updated the infamous RedSn0w jailbreak which is now compatible with Windows. This step by step guide and tutorial will show you how to jailbreak your iPhone 3G 4.1 using RedSn0w for Windows.

It’s important to note that if you’ve already updated to iOS 4.1 you will not be able to unlock your iPhone. If you do need to unlock and if you’re not on iOS 4.1 yet, I suggest you wait for the release of PwnageTool, which will allow you to update to 4.1 while preserving the baseband, thus enabling you to use UltraSn0w to unlock.

This tutorial is for the iPhone 3G only. If you have an iPhone 3GS 4.1 that you want to jailbreak, you’re going to have to wait from Comex’s next jailbreak. If you have an iPhone 4 on 4.1, you will have to wait until Sunday for the release of GreenPois0n.

The Mac version of this tutorial can be found here. This being said, here is how to jailbreak your iPhone 3G 4.1 with RedSn0w…

Step 1: Make sure you are running the latest version of iTunes (iTunes 10).

Step 2: Download iOS 4.1 for iPhone 3G and RedSn0w 0.9.6 beta 1 for Windows to your desktop from our iPhone downloads section.

Step 3: Update your iPhone to iOS 4.1 via iTunes.

Step 4: Launch RedSn0w and click “Browse”. Look for the firmware 4.1 you downloaded to your desktop in step 2. Click Next. RedSn0w will now “prepare jailbreak data”.

Step 5: A window with 8 different options will be offered to you. Make sure to at least select “Install Cydia”. You may select other options as well, depending on your needs. If you choose to enable multitasking, know that it will most likely slow down your iPhone.

Step 6: Follow the onscreen instructions by turning off your iPhone and clicking the “Next” button. We will now put your iPhone in DFU mode. Again, follow the onscreen instructions for that: hold down the home and power button together for 10 seconds. After 10 seconds, release the power button while still holding the home button until your iPhone reboots.

Step 7: RedSn0w will now be working its jailbreak voodoo on your iPhone. Sit tight. Your iPhone will reboot once done.

Done! This whole process should just take a few minutes. After that, you should see the Cydia icon on your springboard.

If you have any question or comment, please feel free to ask in the comments section below.

  • Jake

    I used Sn0wbreeze to jailbreak my 3G running 4.1 and 5.14.02 BB. However, I want to switch to Redsn0w, PwnageTool, or Blackra1n so I can run Bootlace and dual-boot Android.

    Does anyone know if it’s possible to switch jailbreaks without reinstalling the iOS (e.g. SSH the kernel files or something)? I’d like to save myself the day it would take to download and restore everything.


  • Alex

    Can I jailbreak for the first time on my 3G device with this?

  • hello all i had same trouble but came to this web site,an all my troubles was gone go to redsnow propertires compatibility run as windows xp service pack 2,then go down to run as administrator,i had same trouble phone app was gone no wifi an cydia waas white,but first try an bam it works great,thanks to few people in here who help me just by writing out a reply thank u to all,im just trying to help by saying it works i did 2 iphone 3g back to back first try,well thanks agin for the help so just want to say it works great,an to the dev,team u are the best in my book rock on guys

  • stiopabg

    Hello, my windows is Vista, I made every thing you wrote, about making the compability as windows xp sp2 and run it as an administrator,but it still gives me a crash when trying to download the jailbreak data.what I have to do now?

  • Ayesha

    FLAWLESSSSS ๐Ÿ™‚ i realized that i used the wrong firmware the first time ๐Ÿ˜› i feel dumb ๐Ÿ™‚

  • mike

    I already have 4.1 ios but downloaded it again an extracted. redsnow cant find the ipsw file in the extracted folder…what am i doing wrong?

    • mike

      ahh. found it under itunes folder….and compatibility mode is the key to the ram disk stuck issue…i just got the iphone from a friend who upgraded…this was very easy process to follow.

  • NICK


  • OmoOba

    Please Any help?? i already jailbreak my iphone 3g on iOS 4.1b with Redsn0w and i have Cydia on my Iphone 3g now but still all sim is not working with it and its only searching it as been 3days now… pls any help i will really appreciate.. thanks

  • Roy

    I have some questions. If I jailbreak will I get gamecenter on iPhone 3G?
    And is 3G multitasking really slow?
    And how long does jailbreaking take?

  • jeremy

    ive allready tried redsnow once and when it was at the browse screen and i selected the ios 4.1 ispw that i downloaded is said it was an unrecognizible file and to select a different one. im gonna try this agian and see if it works.

  • jeremy

    YUP i downloaded the ispw from the link above and what do you know red snow wont use it. i think thats bullshit. you have a link to a file that doesnt work. this is a bad tutorial. you telling me down load redsnow then down load the ispw from your links and they dont work.

  • Dave

    yeah i was stuck on “waiting for reboot”, tried changing USB and still nothing. Changed compatibility to xp (service pack 2) and ran as administrator and worked straight away!

    • Brit

      I tried both of those and I’m still suck on “waiting for reboot” Any other options?

  • Zach

    Okay, so, i get past the part where you press “finish” on redsnow and i check the ipod and it has no pineapple logo to signify its working, i only have a black screen(it is on).
    im running on a 4.1 second gen and using redsnow 9.6b2.
    a quick response would be nice ๐Ÿ™‚

  • Zach

    or is it a ram drive? i think its the ram drive that doesnt show up during the “ram disk” part

  • jeremy

    just ran redsnow and i think its working. it just installed the bundles with the pineapple thing and now its rebooting, hopefully it actually starts up this time. OMG!!!!!! IT ACTUALLY WORKED. IM SO F-IN HAPPY. I HAVE AN I PHONE AGAIN. well just have to see if the wifi and everything like that works.

  • keith

    Question, as soon as the hard drive and arrow showed on my screenaand it said downloading jailbreak data my PC said redsn0w encoutered a problem and had to close, should i start over?

    • Cyndi

      That has happened to me about 10 times. I am getting VERY frustrated!

  • Francis

    WoW…I just jail break my I-phone 3G 4.1 using redsn0w_win_0.9.6b1 which I found here. It’s really work’s & the baterry symbol has appear ; )
    The whole procedure to jail break was quite complicated as I encounter app crash several time’s as below.
    Problem signature
    Problem Event Name: APPCRASH
    Application Name: redsn0w.exe
    Application Version:
    Application Timestamp: 4cacf62d
    Fault Module Name: ntdll.dll
    Fault Module Version: 6.0.6002.18005
    Fault Module Timestamp: 49e03821
    Exception Code: c0000005
    Exception Offset: 00066739
    OS Version: 6.0.6002.
    Locale ID: 17417
    Additional Information 1: ea39
    Additional Information 2: b511b5f235b215895bb73bdf0438aeb1
    Additional Information 3: b7f6
    Additional Information 4: ff4d642c20a5b75337a292220c2912c8
    I had to run redsnow as administrator then only it works ; )

  • Nigel

    Please Help, I downloaded the firmware and redsnow, I unzipped them both and ran the redsnow, I pressed the browse button and selected the firmware but all I get is “no items match your search” what am I doin wrong I am using windows vista

    • Godulous

      Nigel, all you need to do is go to start menu then control panel, then folder options, once in folder options uncheck the box where it says hide known folder options. Then click apply. After that go back to where ever you downloaded your firmware, desktop or downloads or whereever you put it. Now right click the firmware, and rename it, just erase the .zip and name it .ipsw. Now you can go back to redsnow and you should find the ipsw. O ya after you change the .zip to .ipsw and push enter a box will pop up saying something about r you sure blah blah, just click yes.

  • tokz

    i already downloaded firmware and redsnow.. and now my iphone is totally shut down..
    please help..

  • Adam

    Well that sucked. Everything was working great and then as soon as I hit the “downloading jailbreak data” on my phone the Redsn0w shut down. I was using the redsn0w 0.9.6 beta b _ 3 or whatever, it’s the third one not the 4th. What do I do? My phone so far is still just saying “downloading jailbreak data.”

  • 88rising

    i’ve done it all once and still dont get a signal from my carrier, both of em. is there something i’m missing

  • TheDailyTutorial

    Hello everybody.

    I’ve created an excellent video, showing you how to jailbreak iDevices (incl. iPad and Apple Tv) on ios 4.1!


    Youtube link:

    Enjoy! ๐Ÿ™‚

  • nick

    i tried jailbreaking my iphone 3g with all kinds of stuff. All on OS 4 firmwares. one time it worked, But, everything in cydia was made for OS 3.x so, everytime i downloaded something that was made for OS 3.x, the iphone would crash and i would have to uninstall the downloaded item. most of the time, however, when i would install something, it would not allow me to uninstall the item, thus i would have to restore. the date is november 27, 2010 and i have my jailbroken ipod touch OS 3.1.2 , and mostly everything in cydia is made for OS 3.x Therefore, jailbreaking OS 4.x is utterly hopeless because nothing will work from the cydia downloads. The other two jailbroken app stores have been shut down. Icy and Rock are no longer. Most of the time, jailbreaks are unseccessful, but if youu are to do one, try jailbreakme.com type that into safari on your idevice. or, use one of geohots limera1n or blackra1n. However, i dont think either are for iphone 3g, but you do not need the firmware for them . Also try Greenpois0n

  • Control

    YES! haha.
    If you have freezing problems on windows 7 run the exe in Xp mode woth admin privileges. worked for me!! hahaha

  • aaron

    im on a black screen after holding the power button and the home button at the same time but no reboot. and with a box that say in dfu mode please wait…what do i do i cant seem to get it working or on at all???????

  • nick

    hey aaron if ur stuck in dfu mode, then ur screwed u have to restore now read my comment about two above urs on november 27th at 11:53

  • DQS

    Bravo….I got jailbrake my iphone 3G iOS 4.1. Thanks guys..

  • hawk

    done jailbreak with no problem BUT my WIFI and BLUETOOTH is GREY OUT? no WIFI or BLUETOOTH enable, i have tried everything mention here to no avails.

  • After a bunch of reboots and trial and error, id gotten mine upgraded to 4.1 Throughout this post youll see what i mean. Now, this question is a bit different, and has me slightly perplexed, maybe tyou guys can help.

    I have another 3g, on ios 4.1. Im trying to jailbreak it, but with no luck, as it always ends up on the waiting for reboot screen, , and when its stuck with the screen off it goes nowhere unless i force it to start. Sometimes it would load and seem like it was working but redsn0w woudl crash
    Im on Vista (ran it both in xp comp mode, and as administrator, as well as all combinations of the two)

    Thing is, the phone doesn’t HAVE an active sim card, were using it over wifi for apple apps and stuff. Daughters essentially using it for an ipod. Is there soemthing else i need to do, or is it possible to JB the phone, without it having an active sim card in it?

  • Oh, also id used redsn0w b1 for my own phones original JB when this article was written, and it worked. It doesnt seem to be able to recognize the ipsw file (downloaded as per the instructions here from teh listed places)

    Later versions recognize it but exhibit teh aforementioned things.

  • Christie

    Hi there. I just jailbroke my husbands old 3G and was wondering if there was a way for my son to be able to use it without the data plan. We asked at&t but they said they will occasionally do a sweep to verify imei numbers and if they find a discrepancy they will charge us for the highest rate plan. Do you think there were just saying that? He lost his phone and I hate to buy another phone when we have a perfectly good phone here. Any help appreciated.

  • KataaHio

    Mine worked perfectlly well. though the unlock on Ultrasn0w didnt work. Could it be because im on baseband 05.14.02?

  • dove

    Hi,jailbreak is successful,but no wifi, how to unlock it?

  • Matt

    Hi i downloaded the IOS4.1 for IPhone 3G but when i used redsn0w to browse the .ispw file couldn’t be found in the file folder. Can someone help me out please??

  • Don

    Seem to be having a problem connecting to itunes to sync my stuff after upgrading the baseband to that of the ipad in order to be able to do the unlock. Anyone having this problem and any ways of solving it..Tried removing completely and re-installing itunes all to no avail. Thanks.

  • alex

    Hey if i jailbreak my iphone with redsnow and i browse 4.1 fw ipsw will it wipe everything i have 0n my iphone?


    p.s please reply quick!

    • roy

      yes of course, all your files will be deleted so before you do that you must backup all your files in itunes so you can recover it again.

  • Michael

    Is it normal for it to take a while when uploading and downloading Jailbreak date

  • Dave

    THANK YOU SO MUCH ๐Ÿ™‚ just registered to say that omg im so happy i got my cydia back. Everything went perfectly not bugs or issues it rebooted, and didnt even delete my contacts or texts. You have made my life so much easier thank you… ๐Ÿ™‚

  • weaksauce

    where can i download redSn0w 0.9.6 beta 1?

  • steve

    i running 4.2.1. i installed the updated restore file (4.2.1.ispw) once it is completed it goes back to the page on itunes asking to retore back to backup file or install as new iphone. what is recommended

  • ruby

    um, it says that the link for the redsnow link for windows on your page is broken?
    what shall i do?

  • BBftw

    i’ve tried everything to jailbreak this damn iphone 3g 4.1. i upgraded to OS 4.2 and everyone said to restore 4.1 because they’ve had a lot of problems on 4.2. but i can’t even restore it back to 4.1 ! sheeeeesh

    • roy

      you cant restore it again, lve heard that you have to downgrade it again, try to search in google of how to downgrade you iphone 4.2 to 4.1..

  • luis

    how long does the waiting to reboot part takes?

  • Azad

    if redsn0w crash occurs try disabling anti virus software if running in administrative mode is not working.

  • John

    My home button is no longer working (iPhone 3G). I want to jailbreak to use app that provides an on-screen home button. I see one of the steps requires holding down the home button (with the off button). I obviously can’t do this. Is there another way to jailbreak?

  • dale

    i just got my iphone and im going to update it to 4.1 and use this method to jailbreak it. will i be able to unlock it with ultra snow? i have 3g

    thanks to anyone who can answer me

    • neil

      hold on dale, what ios is it on now? because if you update to 4.1 it will update your base band 05.14.02 which leave you with a lock phone.

  • uhaneSUP

    I tried everything. I have a 3G iOS 4.1 BB 5.14.02

    My phone is now stuck on connect to iTunes (restore screen) and will not go anywhere and will eventually shut down my iPhone and close iTunes as well.

    Can anyone help? Much appreciated!!!

    • neil

      hope you have save all your shsh files, first download ios 4.1 save it on your desk top (use firefox to d/l) and d/l redsn0w 0.9.6rc8 . lets assume you have save all your ios files, open Tinyumbrella start the tss (phone connected) open itune do shift on key board hold it down click on restore on itune then point to the 4.1 ios u have d/l and let it restore to factory ios 4.1. once that is completed open redsn0w 0.9.6rc8 click on browse again point to the ios 4.1 and follow the rest of the direction

  • Sohan

    I jailbreak my iPhone 3G by using redsn0w and select Cydia ,multitasking etc. But now after jailbreak I don’t use multitasking only .please help me. Please

    • neil

      opps!!! you did not read the instructions, not to check multitasking, it will s-l-o-w down

  • Logan

    After I have downloaded redsnow will I need an Internet connection to finish the jailbreak?

  • Logan

    After I have downloaded redsn0w will I need an Internet connection to finish the jailbreak?