4.1 limera1n JB to 4.2.1 greenpois0n JB

Discussion in 'Jailbreaks and iOS Hacks' started by urbanmacUser, Feb 9, 2011.

  1. urbanmacUser macrumors regular

    urbanmacUser

    Joined:
    Sep 9, 2008
    #1
    I have 4.1 limera1n jailbroken iPhone 4.

    What's the best way to get to 4.2.1 and JB with greenpois0n?

    Is this possible:
    Backup iPhone
    Clean install to 4.2.1
    Jailbreak with greenpois0n
    Restore content
     
  2. WhatAmI macrumors 6502a

    WhatAmI

    Joined:
    Sep 2, 2009
    #2
    Yepp, this is exactly what I did myself. Worked like a charm.
     
  3. aldo818 macrumors regular

    Joined:
    Nov 18, 2009
    Location:
    South of France
    #3
    tried to update to 4.2.1 now i get error 1013 on itunes and my iphone seems blocked i had 4.1 jb with limorain
     
  4. maximus96 macrumors 6502a

    maximus96

    Joined:
    Sep 25, 2007
    #4
    i thought that error was just to show your baseband hasn't updated and you can use tinyumbrella to kick it out of DFU mode. that way you can also unlock 4.2.1 with ultrasn0w...please correct me if i'm wrong as i'm looking to do mine soon.
     
  5. WhatAmI macrumors 6502a

    WhatAmI

    Joined:
    Sep 2, 2009
    #6
    Have you forgotten to edit out the Cydia entry from your HOSTS-file?
     
  6. amv1017 macrumors newbie

    Joined:
    Jun 19, 2010
    #7
    Exactly the same happened to me and then i went into tiny umbrella under advanced and unchecked the box that had something about cydia (cant remember exact wording)...lol

    Phone updated and now jailbroken with gp
     
  7. huskerchad macrumors regular

    Joined:
    Jul 17, 2002
    #8
    1013 error is expected at the end of the update, if you are trying to preserve your baseband.
     
  8. aldo818 macrumors regular

    Joined:
    Nov 18, 2009
    Location:
    South of France
    #9
    Thank you guys problem solved updated to 4.2.1 and jb with gp all working smooth now
     
  9. urbanmacUser thread starter macrumors regular

    urbanmacUser

    Joined:
    Sep 9, 2008
    #10
    I assume as I bought my iPhone SIM free from Apple (UK) that the baseband problem will not be an issue for me :confused:
     
  10. allisfair macrumors member

    Joined:
    Jul 15, 2009
    #11
    ^ that's correct. that's why people pay more for a factory unlock. they don't have to rely on hackers to software unlock it.

    go jailbreak away... if you want to that is.
     
  11. The5thElephant macrumors newbie

    Joined:
    Feb 1, 2011
    #12
    You don't even need to do a clean install of 4.2.1 if you want to keep your app data (save games, etc.).

    I just backed up first in iTunes and pkgbackup (for jailbreak apps, but not necessary), and then upgraded to 4.2.1 as if it was a normal upgrade. Then I jailbroke with greenpois0n and it worked fine.

    The only issue with this method is that some small files get left in your preferences even after upgrade to 4.2.1, but if you are setting your JB up the same as before those files will be there anyway.
     
  12. blueprint1983 macrumors 6502

    Joined:
    Sep 4, 2007
    Location:
    Missouri
    #13
    I jailbroke for the first time with my iPhone 4 yesterday to Green P0ison 4.2.1 and it's been flawless. Jailbreaking was a bit too easy for me not to do this earlier!

    Mywi ftw!
     

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