Green Poison Jailbreak iOS 4.2.1 How To Tutorial


In November, Apple shipped the 4.2.1 update for its mobile operating system iOS, and days later, the iPhone jailbreaking community had figured out how to hack it. Unfortunately for jailbreaking enthusiasts, the only hack available at the time was what’s called a “tethered jailbreak,” meaning that every time you reboot your device, you have to connect it (i.e.,”tether” it) to your computer.

But now, members of the hacking group known as the Chronic Dev Team have released a new jailbreaking tool called greenpois0n, which delivers, at long last, the highly anticipated “untethered” jailbreak.

 

Jailbreaking, for the uninitiated, is a term used to describe the process of hacking a mobile device to lift the restrictions put in place by the software maker or manufacturer, in this case, Apple. People jailbreak their iPhones (and iPod Touches and iPads, too) for a number of reasons – to install third-party applications Apple doesn’t approve, to use their phone as a Wi-Fi hotspot, to further customize the device’s user interface with themes and to generally tweak and customize things more to their liking.

The term does not, however, mean the same thing as “unlocking” – that refers to hacking a phone so it will run on another carrier’s network – for example, getting the AT&T iPhone to run on T-Mobile’s network. An unlocked phone must be jailbroken first, but a jailbroken phone does not need to be unlocked.

The Original 4.2.1 Jailbreak Tool: Redsn0w

The first group to jailbreak the newest iPhone operating system was the iPhone Dev Team, who released a tool called redsn0w. The software would work on both Mac and Windows machines, but as noted above, it required the phone to be tethered to a computer every time it rebooted.

We documented the procedures here in November with a warning that, frankly, this one should probably be skipped. It’s a huge pain to be tethered, we said, especially on an iPhone.

The New, Untethered Jailbreak: Greenpois0n

The new jailbreak – aka “greenpois0n” – now allows you to jailbreak your device without the tethering requirement afterwards. Unfortunately, it’s only for Mac users for now. From the website, it appears that both Windows and Linux versions are under development.

Greenpois0n does not support those who want to unlock their iPhones. The jailbreak does, however, support iPhone 3GS and iPhoneg 4, the iPad, iPod Touch 2G/3G/4G and even Apple TV (second generation).

How to Use Greenpois0n

To get started using this jailbreak, the following are the recommended procedures. A word of warning: some of the first to attempt this jailbreak are reporting issues and some are even saying that the jailbreak doesn’t work. For others, it’s taking a few times before the process works as designed. Others still say they don’t have any issues at all. In other words, proceed at your own risk!

If you’re feeling daring, then do the following:

  1. Backup your device and restore it to iOS version 4.2.1, setting it up as a new device within iTunes.
  2. Plug in your device to your computer and turn the device off.
  3. Download and run greenpois0n on your computer. The onscreen instructions will guide you as to how to get into DFU mode on the device, which involves a series of button presses (press and hold sleep, press home, release sleep, continue holding home).

  1. When your phone or other device enters into DFU mode, the jailbreaking process will begin.
  2. When the process completes, you’ll have a new “Loader” icon on your homescreen. (Apple TV jailbreakers, of course, will not. They will need to use Terminal and SSH instead).

  1. Tap the icon to install Cydia, the jailbreak app store.

 

Note that, at the time of writing, both the greenpois0n website and Cydia’s servers are experiencing high traffic loads and are intermittently up and down. Your best bet: wait a couple of days for the fervor to die down, and then try again.

http://www.youtube.com/v/Uph6BE0BopI?f=videos&app=youtube_gdata

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46 Responses to Green Poison Jailbreak iOS 4.2.1 How To Tutorial

  1. cats & dogs says:

    I visited various websites but the audio quality for audio songs current at this site
    is really wonderful.

  2. need help says:

    I have extracted files and I see the icon on my desktop. However, I click on it to run the app and it continues to extract files on my computer. Please help somebody>!!!<

  3. snsdtiffany1989@ymail.com says:

    i can’t jailbreak my iphone 3g, it keep saying ‘please try again’ everytime i finished holding the bottons

  4. Brenda says:

    hey, im new to this so idk i downloaded greenpoison for iOS 4.2.1 and idk what to do when the program is done loading can i get help please ?

  5. Pingback: Cell phones | 'Oh the People You Meet!

  6. Davo says:

    I have an iPod Touch 2nd Gen that I want to jailbreak from a Win 7 64-bit PC. I downloaded RC 6.1 and followed the instructions and could not get greenpois0n to recognize the DFU mode. I tried 6-8 times. (I download Sn0wbreeze 2.9.3 and had the same results) I set the properties on the exe files to be XP compatible and ran them in admin mode. I saw an article on the web, don’t remember the link, that said there was a USB library problem on 64-bit machines. Can anyone help me on this

  7. Hannah says:

    does this give you wi-fi everywhere you go?

  8. olivia says:

    Absinthe will not run on my mac? asks to relaunch over and over. i’m using iphone 4s 5.0.1 with a macbook 10.5.8. any suggestions?

  9. officialtripz says:

    It worked for my iPhone 4 iOS 4.2.1. thanks!!!!!!!! :)

  10. Ahhh ! says:

    My iPod wont turn on now. Anybody ?

    • James says:

      The same thing happened to me. FOLLOW INSTRUCTIONS!
      1. Plug iPod touch/iPhone/iPad into computer
      2. Hold Sleep button for 3 seconds
      3. Hold both (Sleep & Power) buttons for 10 seconds
      4. Hold ONLY power button for the remaining time until something pops up on your computer screen
      (if this doesn’t work, call the Apple Company)

  11. Ahhh ! says:

    My iPod won’t turn on now after trying green poison. Anybody ?

    • me says:

      The same thing happened to me. FOLLOW INSTRUCTIONS!
      1. Plug iPod touch/iPhone/iPad into computer
      2. Hold Sleep button for 3 seconds
      3. Hold both (Sleep & Power) buttons for 10 seconds
      4. Hold ONLY power button for the remaining time until something pops up on your computer screen
      (if this doesn’t work, call the Apple Company)

    • thomas says:

      i will if u hold the sleep button or power button for some time and then hold the power button an home button for some time

      if this doesnt work plug to your computer it will restart

  12. Kiki says:

    it worked! thank you soo much!

  13. lex says:

    go to jailbreakme.com and use ur ipod when it has wifi u dont need a computer

  14. lex says:

    wow use jailbreakme.com from ur ipod using wifi

  15. jasmine says:

    one you jailbreak your ipod leave it in the computer and the green poison sign will seem like its frozen but leave it there till like a hour because i though it was but i left it in and it loaded so just leave it in the computer until your homescreen comes on hope it works for you guys:)

  16. kyle says:

    My ipod touch has had this jailbreak for a while now and it has worked great up untill the past few days, it has been reseting every time i try to open anything that has to do with wifi connection. And i was wondering if its just this jailbreak or some kind of system error, thanks for your time.

  17. devon says:

    ok it says failed to get apples5l89220xarm7m after 1 30sec on my iphone..wtf does that mean? what do i do some1 plz help

    • Desperate! says:

      I’m having the same problem, too. Got any solutions for it?

      (Failed to get AppleS5L8920XARM7M after 230 sec.)

  18. Afai says:

    Fcuk. I accidentally delete my loader. How should I do?

  19. chris says:

    it wont read my iphone it just keeps saying try again

  20. Jack Worton says:

    Im on a blank white screen,
    on Green Poison it worked i got into DFU mode,
    I clicked ‘ Jailbreak!’
    and now my ipods on a blank white screen?
    any ideas?
    email me,
    jackworton@virginmedia.blackberry.com

  21. troy says:

    Was about to start downloading until i read everyones disappointing sentences.. SOUNDS LIKE GREEN POISON has got some more research to do b4 they go effin everyones shit up!

  22. alex says:

    my ipod dosnt turn on now..

  23. Joe says:

    Hi I was trying to actually do on my iPod 4G. I’m running on IOS 4.3.2 and I know greenpoisOn runs on 4.2.1. I’m not sure if I should downgrade or not once I get to the “jailbreak” button it takes 3+ minutes then says “jailbreak fail :( ” any help?

    • dayna powell says:

      Hi,
      was wondering if you could help im trying to jail break my iphone 3gs version 4.2.1 and every time it does it its saying jailbreak failed. Did you find the solution for yours??
      Many thanx
      Dayna

  24. naldons says:

    what of version of greenpoison can do untethered jailbreak with ipod touch 4.3

  25. Ro says:

    Help! I’ve been stuck on the code page for about 15-20 min now, in your video it didnt seem like yours took that long. I don’t know what to do now :(

  26. lean says:

    the loader button doesn’t launch. any suggestions?

  27. sassymiss says:

    i cant get the program to work for my iphone 3g

  28. TERI says:

    wondering how to downgrade a ipod ?

  29. @alisha says:

    @alisha hold down the power button and the home at the same time for about 10 seconds, it sounds like it didnt jailbreak it and your just stuck in DFU mode

  30. axion says:

    Its in DFU mode… there is some weirdass bug… all you have to do is follow what this guy says: http://www.everythingicafe.com/forum/iphone-3g/iphone-3g-stuck-in-dfu-please-help-33009.html
    And presto!

  31. alisha says:

    my iphone wont turn on now… please help!!

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