Downgrade baseband so official unlock can work?

Discussion in 'Jailbreaks and iOS Hacks' started by marcelo4527, May 28, 2013.

  1. marcelo4527 macrumors member

    Joined:
    Nov 23, 2012
    #1
    So I have an AT&T iPhone 3GS and I decided to buy an unlock for $2, i've unlocked many other iphones through this method so i know how it works and everything..

    So after receiving the unlock confirmation I restored with a non at&t sim and I was stuck at the activation screen! I only then remembered and realized that some iPhones 3GS that are on the iPad baseband (6.15.00) could or will have problems with the unlock and mine is!

    So I'm wondering that if I manage to downgrade the baseband to an oficial one will then the unlock work?
     
  2. PsstGreek macrumors 68040

    PsstGreek

    Joined:
    Oct 21, 2010
    Location:
    Tampa Bay
    #2
    Yes.
     
  3. marcelo4527 thread starter macrumors member

    Joined:
    Nov 23, 2012
    #3
    That's great! Do you have any suggestions on how should I do that?
     
  4. PsstGreek macrumors 68040

    PsstGreek

    Joined:
    Oct 21, 2010
    Location:
    Tampa Bay
    #4
    Create a custom firmware for iOS 4.1 and restore to that. Downloaded the latest version of redsn0w and also an official 4.1. Point redsn0w to the official 4.1 and do the downgrade. After that, restore to 6.1.3.

    There are plenty of guides/tutorials also on how to do this on the web.
     
  5. TriJetHero macrumors 601

    TriJetHero

    Joined:
    Oct 13, 2010
    Location:
    World
  6. gngan macrumors 68000

    gngan

    Joined:
    Jan 1, 2009
    Location:
    MacWorld
    #7
    My suggestion is to search. Learn to use the sacred search button.
     
  7. marcelo4527 thread starter macrumors member

    Joined:
    Nov 23, 2012
    #8
    Thanks it worked. It was quite simple, I just had to use redsn0w, select the IPSW of my iPhone version (I had problem with that, instead of selecting the 6.1.3 ipsw which is my iPhone current ios, I had to select iOS 6.0 because redsn0w is compatible with only that or something like that...)
    Then I just click on jailbreak and select downgrade from iPad baseband
     
  8. dhlizard macrumors G4

    dhlizard

    Joined:
    Mar 16, 2009
    Location:
    The Jailbreak Community

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