How To Jailbreak iPod Touch 4G, iPod Touch 3G, iPod Touch 2G On iOS 4.2.1 Using Redsn0w [Windows]

Jailbreak iPod Touch On iOS 4.2.1 Redsn0w

Redsn0w is a popular jailbreaking tool developed by the iPhone Dev Team.

iPhone Dev team had released Redsn0w 0.9.6b4 quite sometime back, which allows iPod Touch users to jailbreak iOS 4.2.1.

In this guide, we will take you through the step by step procedure to jailbreak iPod Touch 4G, iPod Touch 3G and iPod Touch 2G on iOS 4.2.1 using Redsn0w.

Here are some important points to note before you proceed.

  • This guide is meant for iPod Touch 4G, iPod Touch 3G, iPod Touch 2G non-MC model users only.
  • Please note that jailbreaking your iPod Touch may void your warranty and hence proceed with caution and at your own risk.
  • Do not forget to backup your iPod Touch before you proceed. You can refer to this post for instructions on how to backup your iPod Touch.
  • Please note that this guide is only meant for Windows users. We will publish a guide for Mac users shortly.
  • After the jailbreaking process is complete, do not forget to checkout our article on tips to keep your iPhone secure.
  • Please ensure you are running latest version of iTunes, iTunes 10.1 or later.
  • Please note that Redsn0w 0.9.6b4 can only perform a tethered jailbreak on iPod Touch 4G and iPod Touch 3G. Tethered means that the jailbreak needs to be reapplied every time you power down your iPod touch. If you let the battery run out or restart your iPod touch then you will need to reapply the jailbreak by connecting to your computer (tethering). iPhone Dev Team has recently released Redsn0w 0.9.7 that will perform an untethered jailbreak on iPod Touch 4G on iOS 4.2.1 but it is currently not ready for the general public.
  • Redsn0w 0.9.6b4 cannot jailbreak iOS 4.2.1 for iPod Touch MC model. This guide is only applicable for iPod Touch 2G non-MC models.

You can follow these step-by-step instructions to jailbreak your iPod Touch:

Step 1: Download Redsn0w 0.9.6b4 by clicking here and save the application in a folder named “Pwnage” on your desktop.

Step 2: You need to download iOS 4.2.1 firmware file:

iOS 4.2.1 firmware file for iPod Touch 2G users (iPod2,1_4.2.1_8C148_Restore.ipsw)

iOS 4.2.1 firmware file for iPod Touch 3G users (iPod3,1_4.2.1_8C148_Restore.ipsw)

iOS 4.2.1 firmware file for iPod Touch 4G users (iPod4,1_4.2.1_8C148_Restore.ipsw)

Step 3: Double click the Redsn0w zip file and extract the application to the Pwnage folder.

Step 4: Connect your iPod Touch to the computer, which should automatically launch iTunes.

Step 5: From the ‘Devices‘ section on the left pane of iTunes, select your iPod Touch device. Now, hold down the Shift button and click the ‘Restore‘ button.

Jailbreak iOS 4.2.1 - Redsn0w

Step 6: Navigate to the Pwnage folder on the desktop and select the downloaded iOS 4.2.1 firmware file (iPod Touch 4G users: iPod4,1_4.2.1_8C148_Restore.ipsw, iPod Touch 3G users: iPod3,1_4.2.1_8C148_Restore.ipsw, iPod Touch 2G users: iPod2,1_4.2.1_8C148_Restore.ipsw). Click on the ‘Choose‘ button to let iTunes update your iPhone with the required firmware.

Step 7: Navigate back to the Pwnage folder and launch the Redsn0w application.

Step 8: You will be asked to select the corresponding IPSW file. Click on the Browse button and select the iOS 4.2.1 firmware file (iPod Touch 4G users: iPod4,1_4.2.1_8C148_Restore.ipsw, iPod Touch 3G users: iPod3,1_4.2.1_8C148_Restore.ipsw, iPod Touch 2G users: iPod2,1_4.2.1_8C148_Restore.ipsw).

Jailbreak iOS 4.2.1 - Redsn0w

Step 9: Redsn0w will verify the firmware file and inform you if it has successfully identified it. Click on ‘Next‘ to proceed.

Jailbreak iOS 4.2.1 - Redsn0w

Step 10: Redsn0w will now start preparing the jailbreak data.

Jailbreak iOS 4.2.1 - Redsn0w

Step 11: You will now be prompted to select the jailbreak options you would like. A few of these may have already been selected by default. Make sure Cydia is selected and select ‘Next‘ to continue.

Jailbreak iOS 4.2.1 - Redsn0w

Step 12: You will now be prompted to switch OFF your iPod Touch and plug it to the computer. Follow the instructions and click on ‘Next‘ to move to the next screen:

Jailbreak iOS 4.2.1 - Redsn0w

Step 13: You will now need to put your iPod Touch into the DFU mode. Redsn0w will take you through the necessary steps:

(a) Hold the Power button on iPod Touch down for 3 seconds:

Jailbreak iOS 4.2.1 - Redsn0w

(b) Now simultaneously hold the iPod Touch and keep the two buttons pressed for 10 seconds:

Jailbreak iOS 4.2.1 - Redsn0w

(c) Now release the Power button while keeping the Home button pressed until Redsn0w identifies the device:

Jailbreak iOS 4.2.1 - Redsn0w

Step 14: Your iPod Touch should reboot now.

Jailbreak iOS 4.2.1 - Redsn0w

Step 15: Redsn0w will now begin uploading the new RAM disk and kernel.

Jailbreak iOS 4.2.1 - Redsn0w

Step 16: You will now be notified once the jailbreaking process is complete. Click on the ‘Finish‘ button to exit the application.

Jailbreak iOS 4.2.1 - Redsn0w

Step 17: Your iPod Touch will reboot once again (which could take approximately 5 minutes). After it has rebooted, your iPod Touch should be successfully jailbroken. You should find Cydia jailbreak app on your iPod Touch’s home screen.


iPod Touch 4G and iPod Touch 3G users should select Just boot tethered right now from the options window and click Next to use Redsn0w to help you boot back into your jailbroken device on every reboot.

Jailbreak iOS 4.2.1 - Redsn0w

Hope this helped. Please don’t forget to drop us a line to tell us how it goes.

[via iClarified]

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  • This works for iPad?

  • Echobravo

    These simple instructions is whant I need it time to jailbreak my iphone 3gs.

  • iphone 4 unlocked

    plz dev team try ur best to unlock iphone 4

  • Xenios

    The only thing I need right now is untethered jailbreak iOS 4.2.1 for Windows

  • fas

    Yes iPhone 4 network unlock is the need of the hour.

  • yex

    is this new? cause i have Redsn0w 0.9.6b5 ages ago

  • sha

    it works thank you very much

    • sha

      oh ya it takes me 30 minutes so it is quite long but worth it!!!

  • Alexandru

    DOes this work for a 4.2.1 newer model of 3gs tethered jb?ty

  • berke

    is this just the windows version of the redsnow which published early this week?

  • fattrain


    No New News on the Untethered/Unlock/Windows/Jailbreak iPhone 4 front…

  • supaastahhmarioo

    it’s all about the iphone4 unlock. forget the crappy iPods and ipads man damn!

    • LOL


  • k.dubb

    this guide is super late. like the post said, Redsn0w 0.9.6b4 was released quite sometime back ago.
    i used to visit for everything iphone..but i guess it’s true that is way more on time with these things.
    (i always see things on iclarified first)
    (but the name is way better) =)

    sorry iPhoneHacks. u guys maybe need more manpower.

  • trooololl

    This is the wrong frimware!!! This shit sucks

  • devTeam Rocks…

    This guide is quite old. But if it was done on purpose, I applaud iphonehacks as it helped filter out a bunch of thick dumb retards. People who dont even have the patience the read the post and then getting excited for nothing. If you cannot even make sense of the title, then jailbreaking is not for you – go get an android powered device.

    • Repulsion

      Everyone this guide may be outdated but this guy is just a huge faggot. Accusing others of being retarded in the same comment that is chalk full of errors is really intellegent.

  • gerard

    I just bought a new ipod touch with a built-in ios 4.2.1, is it possible for it to be jailbroken – untethered? help, pls?? he-he

  • gerard

    i mean, after the final jailbreak is realeased?

  • Paul

    what does it change, i installed it succesfully on my i pod but it didn’t change nothing

  • chrisssy

    when i try to restore it doenst regognise the firmwrae file (cause its a zip file?) how do i change the type of file?

  • chrisssy

    solved it, when downloading firmware svae it as a .ispw file

  • chrisssy

    oh no, its stuck on exploiting with limerain

  • chrisssy

    cydia doesnt work 🙁

  • Mike

    I just jail broke my iPhone 3GS and used ultrasn0w and when I put my simcard in just says searching ? It did not unlock it WTF help

  • Redsnow worked for me on my 3gsi0s 4.2.1,n0w there comes the hassle of unlocking,coz ultrasn0w doesn’t work,has someone out there gotten aclue on how to unlock ???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????

  • Just

    seriously though thanks it worked great

  • chrisssy

    c’mon! how come evrybody elses works 🙁
    im using ipod touch 4g, goes well until i try to open cydia, its blank and wont open for more than a second 🙁

    • k.dubb

      u have to use the function inside redsn0w that says ‘install iPad baseband’.

      then u can use ultrasn0w to unlock.
      these instructions are all over the web.
      if u continue to have trouble, just go to

      btw, only iphone 3g and 3gs can have the iPad baseband.

      • k.dubb

        also, ipod touch 4g is requires a tethered jailbreak. so u have to re-run redsn0w and check mark the box that says ‘ just boot tethered right now’.
        everytime ur ipod powers off for any reason, u have to run redsn0w with that box checked.

    • I also have the same iPod Touch … It even says the
      firmware (iPod4,1_4.2.1_8C148_Restore.ipsw) is not compatible with both the iTunes restore and the redsn0w jail breaker …

      • sorry !!! the names really Rachel … Typograpichal error …

  • TheFlesshh

    I downloaded the Redsnow from the link in here and on devteam’s link too but when I try to open the Zip file it says that there is an error and it wont open!!!
    Any ideas on that? TY people!!!

    Happy new year!

    • TheFlesshh

      Disregard the previous one… is working

  • tom

    stuck in step 15. only 2 bars have been loaded for uploading the ramdisk. any tips?

  • hello

    it works well.
    I have an ipod g4.
    nice work thank you

    Regards Ruben

  • Arvind

    Hi I have Iphone 3GS MC model, iOS 4.2.1. I want to jailbreak this. I try many times using redsnow_win_0.9.6b4 & 0.9.6b6 both were unsuccessful my phone got frozen i need to restore it. Please advice me how to jailbreak this using windows PC.
    Thank u very much

  • Jessica


  • Jessica


  • Chris

    Hi,I have the new ipod touch 4g softaware ver: 4.2.1.
    I followed some of your steps to jailbreak it but when I downloaded the “iOS 4.2.1 firmware file for iPod Touch 4G users (iPod4,1_4.2.1_8C148_Restore.ipsw)”
    and i opened “redsn0w” it doesn’t find any firmware “iPod4,1_4.2.1_8C148_Restore.ipsw” in the folder? whats wrong????

    • THeman

      Same problem here it only appears as a Zip file cant make it be an IPSW please some one comment on how to use the IPSW

  • Danny

    you guys are failwhales

  • cyberjuba

    Great guide!
    Couldn´t be easier!


  • Jay

    Thanks for the guide. Now I am going to jailbreak my iPhone and see how it go. Thanks.

  • Bibas

    Where the hell is it for MC model? What shall i do with MC model? Do not fuckin jailbreak or what???

  • Raz

    When will we get untethered JB for 3G ipod on 4.2.1?
    Thanks for tethered JB.

  • Arturo

    I did it all okay, and it worked, but then i conected it to itunes to sincronize it with music but i didnt do it okay, so everything was deleted from the ipod and i neded to jailbreak it again but now i can’t, the process just dont finish it frezeez in the drive image, what should i do

  • i tried doing this with my itouch 4g but my itouch didnt reboot and now my itouch dosent work:(

  • omar

    i went through the process for my ipod touch 4g but cos it says to choose the ‘Just boot tethered right now’ from the window i dont understand how that option has jailbroken my ipod because i dont have the cydia jailbreak app on my home screen. so can somebody help me??

  • dbj0hn

    The damn Redsn0w program could have said that they currently cannot jailbreak the MC models of iPod Touches BEFORE I freakin restored my damn Touch for nothing… That was stupid as hell… Thanks anyway.

  • Vishal

    Hey if this doesn’t work for u try black poison its dam easy to jailbreak using that, it takes only about 2-4 mins max and the job gets done perfectly so all round much better option and the only catch is that u need to have a wireless internet to download cidia via wifi on ur ipod touch after its been jailbroken but i’m sure u can arrange for that somehow 🙂

  • stolen ipod how do i find it!!!

    • where did you loose it?

  • Dino

    My iPod just froze at the load screen…. Now it’s just kinda lit up and dead. Gee thanks now I gotta figure out what the hell to do with a brick.

    • Jo

      Re run the program to where the ipod says it is connected but needs to be restored. Then, from itunes, restore the ipod from an earlier date

  • alex

    what is the shift button

  • myself

    I get my iTouch 2g about 3/4 into the updating ramdisk stage, and then it stops… Can I get some help?

  • I did it all o.k., and it worked, but then i conected it to itunes to sincronize it with penalty but i didnt do it o.k., so everything was deleted from the ipod and i neded to jailbreak it again but now i can’t, the noesis conscionable dont goal it frezeez in the cover icon, what should i do

  • I am still stuck on that part where it says exploitin with limera1n .. it wont load! :/ Ive been waitng for too long already :/ , can anybody please help me?

  • ryan

    yea i did this i re-ran it and click just boot tethered and my cydia still wont work can someone plz help me

  • Is it true that if you last download, install, that “Exploiting with Limera 1n” long stays?