UNTETHERED 4.2.1 Jailbreak Greenpois0n RC5 B4 How To Guide

Discussion in 'Apple iPad News' started by PhilSynowiec, Feb 7, 2011.

By PhilSynowiec on Feb 7, 2011 at 6:18 PM
  1. PhilSynowiec

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    Super Moderator
    Staff Member

    Jul 10, 2010
    Thanks Received:

    The untethered Jailbreak for 4.2.1 with Greenpois0n has been fixed with almost not flaw this time. The Jailbreak is as easy as it was before, maybe not as easy as Jailbreakme.com, but still, barely any work. Follow the instructions below.

    1. Download Greenpois0n RC5 B4 for Windows or Mac from GreenPois0n
    2. Restore your iDevice to 4.2.1 (if you need to preserve your baseband and you require and unlock DO THAT with TinyUmbrella)
    3. Open up Greenpois0n
    4. Connect your iDevice and make sure your computer recognizes it.
    5. Go into DFU through Greenpois0n, follow the steps on screen.
    6. After you are in DFU, hit "Jailbreak" on Greenpois0n
    7. Your phone will do a bunch of crazy stuff, let it sit until it restarts and finishes.
    8. Connect to Wifi
    9. Open up your loader app, that you have now on your homescreen.
    10. Download Cydia.
    11. CONGRATZ!

    Greenpois0n RC5 B4:
    4.2.1 Firmware(for any reason you need it):
    iPod, iPhone and iPad Firmware Download

    Supported iDevices:

    - iPod Touch 2G (all bootroms)
    - iPod Touch 3G
    - iPod Touch 4G
    - iPad 1G
    - iPhone 3Gs (all bootroms)
    - iPhone 4
    - iPhone 4 Verizon (_not_tested_)
    - AppleTV 2


Discussion in 'Apple iPad News' started by PhilSynowiec, Feb 7, 2011.

    1. andsoitgoes
      It worked like a dream for me.

      DO NOTE THIS....

      If you have a 4.1 jail broken iDevice, make SURE to edit your hosts file to remove the gs.apple entry.

      Likely it was edited through tiny umbrella or some sort of edit to prevent checking apple's server.

      That was the major issue I had, once I edited that and restarted, I was good to go.

      As far as my iPad went, I had just jail broken it about 2 weeks prior and the final unlock with greenp0ison went without a hitch. Fastest JB since Jailbreakme.com.

      Thanks to the GP team. I don't know what I'd do without them!!
    2. Spectrum2010
      Newbie Questions.

      After jailbreaking my iPad do I see my appz still on iPad?
      If not, can I restore the appz by syncing with iTunes assuming I had backed up before jailbreaking?

    3. daveathall
      I have never jailbroken, I have a iPod touch 4th gen on the latest update, I was about to give it a go until I read this, I haven’t got a clue what it means.
    4. andsoitgoes
      Then you have nothing to worry about. If you've never touched your hosts file, you've NEVER Jailbroken and have NEVER used Tiny Umbrella, you have nothing to worry about, and can Jailbreak with no problems assuming you have 4.2.1 installed. If you do, run Greenp0ison and follow the instructions.

      Jailbreaking doesn't do anything to your iPhone or iPad other than install Cydia and give you the ability to install jail broken software on it. EVERYTHING is the same.

      If you jailbreak and don't install anything via Cydia, your iDevice will look virtually the same, sans for a Cydia icon.


      To note - I was a newbie as soon as I got my iPad. I jail broke my iPad and was learned very quickly. Spend time on Modmyi and did my research. It's a solid process and it's hard to HURT things.
    5. Kinghalifax
      What itunes should i use when upgrading from 3.2 to 4.2
    6. Spectrum2010
      Thanks for the info!
    7. daveathall
      andsoitgoes, thank you very much.
    8. @imbrentjames
      New to the forums here. Id never jailbroken anything before but I'm relatively tech savvy. Greenpoison, however, can be performed by ANY newbie.

      My one tip: Do not install Winterboard or any theme that requires it. My iPad with 4.2.1 firmware crashed and I had to do a restore. Everything is rock solid now and I'm looking for recommendations on iPad apps. Anyone?
    9. @imbrentjames
      One more thing... Read up on OpenSSH if you plan to Jailbreak as your device is now vulnerable to exploits. Downloading apps from outside of iTunes with the default password "Alpine" for Root which every Apple Mobile device uses (apparently) is NOT safe.


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