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UNTETHERED 4.2.1 Jailbreak Greenpois0n RC5 B4 How To Guide

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

  1. PhilSynowiec
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    PhilSynowiec Super Moderator Staff Member

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    [ame]http://www.youtube.com/watch?v=5Vf-oWoJy6M[/ame]​

    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:
    GreenPois0n
    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
  2. andsoitgoes
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    andsoitgoes iPad Fan

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    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!!
  3. Spectrum2010
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    Spectrum2010 iPF Novice

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    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?

    TIA
  4. daveathall
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    daveathall iPF Novice

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    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.
  5. andsoitgoes
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    andsoitgoes iPad Fan

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    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.
  6. Kinghalifax
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    Kinghalifax iPF Novice

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    What itunes should i use when upgrading from 3.2 to 4.2
  7. Spectrum2010
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    Spectrum2010 iPF Novice

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    Thanks for the info!
  8. daveathall
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    daveathall iPF Novice

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    andsoitgoes, thank you very much.
  9. @imbrentjames
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    @imbrentjames iPF Noob

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    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?
  10. @imbrentjames
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    @imbrentjames iPF Noob

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    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.

    Cheers.
  11. Kinghalifax
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    Kinghalifax iPF Novice

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    Could you be more elaborate on what we are vulnerable to???

    Sent from my iPad using iPF
  12. unimatrixzer0
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    unimatrixzer0 iPF Noob

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    Thanks for the safety tip.
  13. Rizqullah
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    Rizqullah iPF Noob

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    Can anyone please help me. I got my iPad jailbroken and installed appsync 4+ via cydia. Thereafter, my iPad won't charged and sync with my Macbook pro. It also got Message "cannot connect to iTune Store". Thank you for your help.

    Sent from my iPad using iPF
  14. andsoitgoes
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    andsoitgoes iPad Fan

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    I've never seen anyone with a jailbroken device have a problem. Ever. EVER. Jailbreaking has been going on for 4 years. If you want more detailed security information, focus on the jailbreak forum here or on a site like ModMyI

    Rizqullah - No offense, but are you completely stupid? You're posting on a forum that denounces piracy that a piracy related app has seemingly caused you problems.

    If you want help with piracy, and piracy related apps - there are forums for that. This isn't one.

    You want some simple tips... try REMOVING it from Cydia. Then respiring/reboot.

    If that still doesn't work, a restore might be in your future.

    And next time if you want help, just think about what you're asking before you post. Piracy isn't really thought off too highly. Just because you can, doesn't mean you should. And just think about that, would you go posting on a Windows tech forums about your pirated version of Office causing problems with your computer?

    Okay - sorry to get onto a soapbox here. Just needed to get that off my chest :)
  15. Rizqullah
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    Rizqullah iPF Noob

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    Thank mr. Andsoitgoes for your nice reply. I thought this forum is a place to get help for someone new to the jailbreaking related things from someone else WHO is willing to share his/Her experience in the past on the subject matters.

    I didn't pretend whatsoever that piracy is legal and that jailbreaking is illegal. Otherwise, I wouldnt want to do It in the First place.

    Thank you
  16. andsoitgoes
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    andsoitgoes iPad Fan

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    If you will notice, I did provide suggestions as to what you need to do.

    That said, simply put: Piracy is illegal. app sync is ONLY made for pirated apps. There is no other use for it. Simple as that.

    jail breaking is not illegal. And to jailbreak, if you were doing it legally, you would never download app sync.

    So again - follow my suggestions, it may work for you.

    But to my opinion, this is karma's way of saying not to pirate.
  17. Kinghalifax
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    Kinghalifax iPF Novice

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    You do seem a bit bitter...lol

    Sent from my iPad using iPF
  18. girohome
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    girohome iPF Noob

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    It worked like a dream for me.
  19. @imbrentjames
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    @imbrentjames iPF Noob

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    I wasn't meaning to imply that you will get hacked... but as a good practice (and especially since I adhere to high security measures even when perceived as unnecessary for various reasons and experiences) one should be aware that giving access to programs at root and since IP knowledge once jailbroken is easily obtained by an app... it stands to reason that having a unique root password is a minimal change that will pay dividends *should* you add an untrusted source and download a surreptitious app.

    In theory one would have to be on your network to utilize this exploit however, I am not familiar with various methods to work around this (or if they even exist for that matter) but I have been at conventions where folks are sharing the WiFi network and would be more than capable of such endeavors.

    That stated, jailbreaking done correctly is very beneficial but that's another thread.

    Now I'm off *my* soapbox ;)
  20. Kinghalifax
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    Kinghalifax iPF Novice

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    Ty very informative

    Sent from my iPad using iPF

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