iPhone Downgrade bb in 3gs on 6.1.2

Discussion in 'Jailbreaks and iOS Hacks' started by ahdhulla, Mar 3, 2013.

  1. ahdhulla macrumors member

    Joined:
    Dec 15, 2010
    #1
    Hi,
    I have 3gs on 6.1.2 [6.15.00] stuck in recovery mode needs to be unlocked and activated.
    And also have saved shsh for 4.1 and 6.0.1.

    Need some help before doing anything to myself. I have Googled a little bit, and found that i have 2 options, down grading bb and iOS.

    kindly request your advice on this.
    thanks/
     
  2. dhlizard macrumors G4

    dhlizard

    Joined:
    Mar 16, 2009
    Location:
    The Jailbreak Community
    #2
    http://blog.iphone-dev.org/post/26534086824/baseband-freedom

    Restore it to 4.1 (no SHSH needed as Apple still signs this for 3GS)
    Follow the tutorial in iClarified.com to get your baseband down to 5.13.xx (use older version of Redsn0w specified in the tutorial)
    Then use Sn0wbreeze to do a No BB restore to 6.1.2
     
  3. aPple nErd macrumors 68030

    aPple nErd

    Joined:
    Feb 12, 2012
    Location:
    Jailbreaks/IOS Hacks
    #3
    4.1 is still being signed for the 3GS!?!?!?!?!
     
  4. Applejuiced macrumors Westmere

    Applejuiced

    Joined:
    Apr 16, 2008
    Location:
    At the iPhone hacks section.
    #4
    Yep. For a very long time for some reason.
    Weird why they left it like that.
     
  5. aPple nErd macrumors 68030

    aPple nErd

    Joined:
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    #5
    Well, can 4.1 be hactivated without sim card?
     
  6. ahdhulla thread starter macrumors member

    Joined:
    Dec 15, 2010
    #6
    Now i tried to unlock while in 6.2.1 using thishttp://forum.gsmhosting.com/vbb/f456/3gs-update-6-1-2-unlock-jailbreak-done-1617623/

    it activated for sometime, but didnt show the siganl and after a while end up in recovery mode again. And now cannot even downgrade to 4.1 error 20 shows.
     
  7. ahdhulla thread starter macrumors member

    Joined:
    Dec 15, 2010
    #7
    thank your for your advice sir.
    Now i have downgraded to 4.1 BB 6.15.00, is it possible to unlock without downgrading BB.
     
  8. skeav macrumors newbie

    Joined:
    Mar 3, 2013
    #8
    having the same problem here but cant for life of me get it to downgrade to 4.1 tried snowbreeze and redsnow both error out tried itunes but keep getting error 20 or 3194 any advice pls
     
  9. TriJetHero macrumors 601

    TriJetHero

    Joined:
    Oct 13, 2010
    Location:
    World
    #9
    Yes with ultrasn0w, but it is better now to downgrade to the 05.13.04 BB and unlock with that, 06.15.00 does not have GPS, 05.13.04 i a stcok BB with full functionality

    Make sure your host file is pointing to cydia, you can try editing manually or use TinyUmbrella to set the host file to Cydia (advanced tab).
    For a downgrade you need to be in DFU-mode, normal or recovery mode might cause the error 20
     
  10. skeav macrumors newbie

    Joined:
    Mar 3, 2013
    #10
    thanks for that finally got it downgraded to 4.1
    next problem i changed baseband to ipad and then downgraded then did a custom ipsw to 6.1.2 to preserve baseband it said it would be stuck in recovery and to use the recovery fix to sort it but its an unsuported firmware in newest redsn0w evern tried tiny umbrella and it fails in htat as well :-(
     
  11. TriJetHero macrumors 601

    TriJetHero

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    Oct 13, 2010
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    World
  12. ahdhulla thread starter macrumors member

    Joined:
    Dec 15, 2010
    #12
    if the error is 20 that might be a signing problem, what i did was clean restore to 6.2.1.
    Edit hosts file.
    put the device in pwn DFU using redsnow
    and restore to 4.1

    ----------

     
  13. dhlizard macrumors G4

    dhlizard

    Joined:
    Mar 16, 2009
    Location:
    The Jailbreak Community
    #13
    For restore to 4.1, pointing host file at Apple should help.
    For downgrading baseband --> Follow the tutorial in iClarified.com to get your baseband down to 5.13.xx (use older version of Redsn0w specified in the tutorial)

    Then Sn0wbreeze No BB restore to 6.1.2
    Ultrasn0w to unlock
     
  14. skeav macrumors newbie

    Joined:
    Mar 3, 2013
    #14
    think i killed mine heres what i did really foolish so kicking myself at the moment
    upgraded to 6.1.2 jailbroke via evasion
    downgraded to 4.1 via snow breeze
    upgraded baseband to 6.15.00 via resnow lost all signal
    downgraded via redsnow still lost all signal
    did custom install 6.1.2 via redsnow said it would need fix after
    tried fix error no sig tried fix via tiny umbrella green poison failed
    tried itunes restore failed error 3194
    tried ireb resotre failed error 1600
    tried redsnow failed sig file not available
    tried older ireb failed error 1601
    tried newer ireb and failed itunes cannont connect to server
    any one with any idea stuck at itunes screen on phone
     
  15. ahdhulla thread starter macrumors member

    Joined:
    Dec 15, 2010
    #15
    Hi, i tried to downgrade bb using the clarified tutorial (updated one) but end up in a recovery mode again.
    thanks
     
  16. skeav macrumors newbie

    Joined:
    Mar 3, 2013
    #16
    fixed my problem had to use a different computer to restore now back on 6.1.2 but base band is on 05.16.08 need to be able to downgrade this if anyone has an idea as phone is locked to orange now :-(
     
  17. TriJetHero macrumors 601

    TriJetHero

    Joined:
    Oct 13, 2010
    Location:
    World
    #17
    Downgrade to 4.1
    You need to point your host file Cydia for 4.x restores
    First you need to upgrade the BB to 06.15.00, this can only be done on older bootrom 3GS's makes ure you have oldbootrom before upgrading to 06.15.00

    After that downgrade the BB to 05.13.04

    Now use snowbreeze to upgrade to 6.1.2, it will preserve your BB, use Ultrasn0w to unlock, you might need ultrasn0w fixer as well.
     
  18. ahdhulla thread starter macrumors member

    Joined:
    Dec 15, 2010
    #18
    Need to ask you a question first, did you try to downgrade your BB when you were stuck in recovery??

    Now I tried to downgrade BB but end up in recovery mode. Now trying to update to 6.1.2 again. But its taking hell o time here. Its is waiting for iphone but no itunes error

    for your problem you need to create custom FW using snowbreeze, (search for the guide)
     
  19. TriJetHero macrumors 601

    TriJetHero

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    Oct 13, 2010
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    World
    #19
    Well it worked for others so somewhere you must be missing a step.
     
  20. ahdhulla thread starter macrumors member

    Joined:
    Dec 15, 2010
    #20
    Now again I am stuck in recovery mode :( cannot event restore to 6.1.2 or 4.1. Even TU doesnt kick me out of recovery mode. Does it mean my bb flashed or the phone was bricked??
     
  21. TriJetHero macrumors 601

    TriJetHero

    Joined:
    Oct 13, 2010
    Location:
    World
    #21
    Put it in DFU and restore to 4.1 or 6.1.2

    Where is your host file pointing to?
    Which redsn0w are you using
     
  22. ahdhulla thread starter macrumors member

    Joined:
    Dec 15, 2010
    #22
    Its in recovery loop. i edited hosts file, and tried to pwndfu using latest redsnow

    ----------

    And also used tu and recboot to exit recovery mode. but ....
     
  23. TriJetHero macrumors 601

    TriJetHero

    Joined:
    Oct 13, 2010
    Location:
    World
    #23
    Did you try to get it in DFU?

    Thats what is needed to restore not pwn-DFU.

    if you type gs.apple.com in your computers browser does it lead you to apple or cydia?
     
  24. ahdhulla thread starter macrumors member

    Joined:
    Dec 15, 2010
    #24
    thanks for your time sir.
    Now i have created ender dfu IPSW and restoring to 6.1.2.
    Since i have bb downgrade you i ve gone through few post and found the bootrom version. Mine was xx0081xxxx.

    when i update to 6.1,2 again i will be stuck on recovery right?? So do you suggest. I have some difficulties using snowbreez
     
  25. TriJetHero macrumors 601

    TriJetHero

    Joined:
    Oct 13, 2010
    Location:
    World
    #25
    Be specific in what you are doing

    What BB and firmware are you on now?
     

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