Help erasing data from unlocked/jb 3GS

Discussion in 'Jailbreaks and iOS Hacks' started by mchas, Feb 12, 2012.

  1. mchas macrumors newbie

    Joined:
    May 8, 2011
    #1
    I apologize, I am sure this question has been asked numerous times, but I want to make sure I don't screw this up... I have a 3GS that I am getting ready to sell, and I want to erase all of my data from it.

    It currently has the original baseband (4.26.08) and is running iOS 4.3.3. Unlocked and jailbroken.

    I would like to erase all of my data, and upgrade it to iOS5, if possible, but making absolute sure I keep the unlock available.

    Can someone kindly point me in the right direction? Thank you in advance!
     
  2. B777Forevar macrumors 6502a

    B777Forevar

    Joined:
    Jul 25, 2011
    Location:
    Chicago, IL
    #2
    Just update it to 5.0.1 and make sure not to restore from your backup
     
  3. mchas thread starter macrumors newbie

    Joined:
    May 8, 2011
    #3
    How do I go about updating it to 5.0.1? I assume not through iTunes, correct? I know very little about this so please forgive the stupid questions... :)
     
  4. TriJetHero, Feb 12, 2012
    Last edited: Feb 12, 2012

    TriJetHero macrumors 601

    TriJetHero

    Joined:
    Oct 13, 2010
    Location:
    World
    #4
    WELL DON'T DO THAT!!! you will lose the baseband and unlock!!!


    Make a custom IPSW with Extra's in redsn0w preserving your original baseband.

    It will finish with a cusom IPSW starting with NO_BB

    Put your phone in DFU-mode

    With that custom IPSW ALT-restore(mac) or shift-restore (win) in itunes.

    You will have a iphone 3gs with 5.01 with your original baseband that you can unlock with ultrasn0w. Set it up as a new phone, it will have no data from your previous phone.


    @777 be careful at what advise to give people!! besides that an MD11 beats an 777
     
  5. B777Forevar macrumors 6502a

    B777Forevar

    Joined:
    Jul 25, 2011
    Location:
    Chicago, IL
    #5
    Oh my bad, I guess I skipped that part. No need to shout over the internet dude :p

    Yeah use snowbreeze or redsnow to preserve your baseband.
     
  6. TriJetHero macrumors 601

    TriJetHero

    Joined:
    Oct 13, 2010
    Location:
    World
    #6
    Well this one needed some attention, or the OP could buy a new phone
     
  7. mchas thread starter macrumors newbie

    Joined:
    May 8, 2011
    #7
    Thanks guys!

    To recap, here is what I plan on doing - please correct me if any of this is wrong:

    1) Downloading iOS 5.0.1 right now
    2) Use redsn0w to modify that IPSW file to keep my baseband
    3) Go into DFU mode
    4) Do a shift-restore using that modified IPSW file
    5) At this point I will have 5.0.1 will my original baseband that I can then use to unlock using ultrasn0w

    Sound good? Thanks again!
     
  8. mchas thread starter macrumors newbie

    Joined:
    May 8, 2011
    #8
    OK, so I upgraded to iOS5 and I see that my original baseband is still there (good news!). Now trying to jailbreak/unlock it again using redsn0w, but it says I need a version of the IPSW. I go to Extras -> Select IPSW and point it at the NO_BB_OLDROM version and it says it isn't supported. At this point can I use the regular IPSW file for the jailbreak or will that screw things up?
     
  9. redbroccoli macrumors member

    Joined:
    Apr 24, 2010
    #9
    Yes, you will need to use the regular IPSW file for that.
     

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