iPhone Upgrading iPhone 3GS to 5.1.1 Preserve Baseband

Discussion in 'Jailbreaks and iOS Hacks' started by benbense, Jul 2, 2012.

  1. macrumors newbie

    Joined:
    Jul 2, 2012
    #1
    Hello, I own an iPhone 3GS tethered on ios 4.3.5, now i wish to upgrade to ios 5.1.1.
    My iPhone 3GS have 06.15.00 Baseband he is a non-sim-free, when im trying to use the expert mode in Sn0wbreeze, it's asking me if i want to install the iPad Baseband, as so i have already the iPad baseband, what shoult i do, chek "V" or leave it without ticking "V".

    Thanks in advance, Ben.
     
  2. macrumors Nehalem

    Applejuiced

    Joined:
    Apr 16, 2008
    Location:
    At the iPhone hacks section.
    #2
  3. thread starter macrumors newbie

    Joined:
    Jul 2, 2012
    #3
    But my device is on 4.3.5 and works fine with ultrasn0w what should i do to upgrade it to 5.1.1?
     
  4. macrumors Nehalem

    Applejuiced

    Joined:
    Apr 16, 2008
    Location:
    At the iPhone hacks section.
    #4
    Create a custom 5.1.1 with redsnow.
    But again you should downgrade away from the ipad bb, its finally available. Who wouldnt?:)
     
  5. thread starter macrumors newbie

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    Jul 2, 2012
    #5
    last time i just done something wrong and i bricked an iphone, :/
     
  6. macrumors Nehalem

    Applejuiced

    Joined:
    Apr 16, 2008
    Location:
    At the iPhone hacks section.
    #6
    Lol :)
    Just follow that tutorial.
    It will downgrade your ipad bb to an unlockable bb that you can still use ultrasnow.
    Then use redsnow to create a custom 5.1.1 to save your bb and put your iphone in pwned dfu and restore it by selecting the custom firmware.
    Open cydia, install ultrasnow, have a nice day:)
     
  7. thread starter macrumors newbie

    Joined:
    Jul 2, 2012
    #7
    ok, so first i downgrade the ipad baseband, then i create that NO_BB file?
    and btw, is my iphone is "fixed"? - serial number: 5K0196FM3NR
     
  8. macrumors Nehalem

    Applejuiced

    Joined:
    Apr 16, 2008
    Location:
    At the iPhone hacks section.
    #8
    Yours has the new bootrom if redsnow asks you.
    And no it's not fixed since you already have the iPad bb installed.
    If it was fixed the second you tried installing the iPad bb all your radios would be dead and fried.
     
  9. thread starter macrumors newbie

    Joined:
    Jul 2, 2012
    #9
    Ok, thx a lot mate, just last question cause i didn't really understan you :p
    here:
    [​IMG]
    Should i Click Yes or No?
     
  10. macrumors Nehalem

    Applejuiced

    Joined:
    Apr 16, 2008
    Location:
    At the iPhone hacks section.
    #10
    Select yes.
     
  11. thread starter macrumors newbie

    Joined:
    Jul 2, 2012
    #11
    Great, so here is what i need to do :)
    1. Downgrade The iPad Baseband
    2. Restore+Update to 5.1.1 With iTunes
    3. Jailbreak
    4. install Ultrasn0w

    if i missed something just say me.

    Thank you very much, you helped me a lot !!!!!! :D:D
    You'r a great person mate! :)
     
  12. macrumors Nehalem

    Applejuiced

    Joined:
    Apr 16, 2008
    Location:
    At the iPhone hacks section.
    #12
    1. yes
    2. No.
    You dont restore or update to official 5.1.1 with itunes. If you do that you will lose your unlock. You restore to a custom No_bb 5.1.1 firmware that you need to create with redsnow.

    3. yes
    4. yes

    follow this tutorial on how to create a custom ipsw:
    Create Custom IPSW For iOS 5.1.1 To Preserve Baseband

    You Need:

    Download the latest redsnow

    Download original IPSW iOS 5.1.1 For iPhone 3GS

    Procedure To Preserve Baseband

    STEP 1: Download redsnow

    STEP 2: Start redsnow and head over to Extras > Custom IPSW.

    STEP 3: Select the original IPSW file for your iOS device which you downloaded from the above link.

    STEP 4: Redsnow will now create the custom IPSW file, the one that has preserved the baseband meaning you will still be on the previous version (baseband).

    STEP 5: Enter into Pwned DFU mood by going to Extras > Pwned DFU. Just follow the on-screen instructions.

    STEP 6: Once your iPhone is in Pwned DFU mood, go to iTunes and press Shift+Restore (Windows) or Option+Restore (Mac). You will need to select the correct IPSW file it will have a prefix “NO_BB”.

    Then once you're on 5.1.1 with baseband 05.13.04 you JB it with redsnow and install ultrasnow from cydia to unlock.

    Let me know how it went.
    And you're very welcome bro.:)
     
  13. macrumors newbie

    Joined:
    Jul 25, 2012
    #13
    SinfulSagar

    Hi,

    My iphone is having old bootrom & is manufactured in 2009, 29th Week.
    Its iphone 3GS with BB 6.15 & IOS 4.1. even i want to downgrade BB to 5.13.04 & upgrade to IOS 5.1.1.
    What is Fixed bootrom? & can i downgrade BB & upgrade to IOS 5.1.1?
    In doing this process my radios wont go for toss??

    Thanks for help & advise.

    Regards
     
  14. macrumors Nehalem

    Applejuiced

    Joined:
    Apr 16, 2008
    Location:
    At the iPhone hacks section.
    #14
    Yes, you can downgrade yours with not probs. use the latest redsnow.

    ----------

    Then if u want to go up to 5.1.1 use redsnow to create a custom ipsw in order to save your bb.
     
  15. macrumors newbie

    Joined:
    Jul 25, 2012
    #15


    What is fixed bootrom? plz explain me..

    Thanks
     
  16. macrumors Nehalem

    Applejuiced

    Joined:
    Apr 16, 2008
    Location:
    At the iPhone hacks section.
    #16
    You dont have to worry about that.
    Yours is the old one.
    Fixed is the bootrom on newer 3GS iphones that just came out in 2012.
    With those you cannot install the ipad bb or you will fry the phone.
     
  17. macrumors newbie

    Joined:
    Oct 28, 2012
    #17
    How can I upgrade ios 4.1 with baseband 06:15:00 to ios 5.1.1 or higher?

    My device is iphone 3gs 16gb from AT & T. I get it from my brother who works in the U.S. and I have upgraded to the ipad baseband 06:15:00 and using ios 4.1, and has been jailbreak, I have done it in order to unlock the SIM card, but some applications require a higher than ios 4.1. How can I upgrade ios 4.1 with baseband 06:15:00 to ios 5.1.1 or higher, but still could use a SIM from Indonesian provider? please help me. :confused:
     
  18. macrumors 601

    TriJetHero

    Joined:
    Oct 13, 2010
    Location:
    World
    #18
    Downgrade the BB and with your blobs restore to 5.1.1 via the newest redsn0w.

    Check iclarified.com for good tutorials
     

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