Possible to upgrade jailbroken/unlocked 3GS to iOS4?

Discussion in 'Jailbreaks and iOS Hacks' started by iPhonelover2010, Jul 25, 2010.

  1. iPhonelover2010 macrumors member

    Jun 30, 2010

    I recently got my hands on a jailbroken/unlocked 3GS running 3.1.2. Is it possible to upgrade it to OS4 without losing the jailbreak/unlock? Warning: I'm a newbie, so you may have to break it down lol :)

    Thanks in advance!
  2. dhlizard macrumors G4


    Mar 16, 2009
    The Jailbreak Community
    Nope, upgrading removes jailbreak and software unlock. If it's old bootrom and pwned jailbreak (not Spirit), you can upgrade and jailbreak in one operation with a Pwnage Tool custom restore IPSW.

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