1. theCro's Avatar
    Let me first say that my originally iPhone came with 3.1.3 and 05.12.01 firmware on it... i accidently upgraded to iOS4.0 and my model firmware became 05.13.04... so I followed this tutorial: thetechjournal.com/electronics/iphone-electronics/downgrade-ios-4-iphone-3gs-3g-and-ipod-touch-to-iphone-3-1-3-3-1-2steps.xhtml

    and i did all that, BUT my model firmware is still 05.13.04 and not 05.12.01 as it came with factory defaults.
    PS YES, i do have 3.1.3 05.12.01 bloobs shsh file saved on my pc!
    07-15-2010 09:47 AM
  2. theCro's Avatar
    UPDATE: I tried jailbreaking with spirit on downgraded 3.1.3 with 05.13.04 and it worked! .. so i re-downgraded to delete spirit and now it's normal 3.1.3 with 05.13.04 and not JB-en. so what to do now to upgrade to 4.0 aj JB it (i have 3.1.3 bloobs file!)
    07-15-2010 10:13 AM
  3. theringer's Avatar
    UPDATE: I tried jailbreaking with spirit on downgraded 3.1.3 with 05.13.04 and it worked! .. so i re-downgraded to delete spirit and now it's normal 3.1.3 with 05.13.04 and not JB-en. so what to do now to upgrade to 4.0 aj JB it (i have 3.1.3 bloobs file!)
    Thats up to you, but if you did not know the modem baseband isnt supposed to change on a downgrade, i would suggest doing a lot of reading and learning before you try too much.

    Just trying to save you some headaches down the road
    07-15-2010 12:28 PM
  4. big9erfan's Avatar
    It's not MODEL firmware it's MODEM firmware ( as theringer pointed out ). It does NOT get downgraded when moving down to older firmwares, it is an upgrade path only.

    If you need to unlock your device, Ultrasn0w should still work.
    07-15-2010 12:43 PM
  5. theCro's Avatar
    It's not MODEL firmware it's MODEM firmware ( as theringer pointed out ). It does NOT get downgraded when moving down to older firmwares, it is an upgrade path only.

    If you need to unlock your device, Ultrasn0w should still work.
    first i need to jailbreak iphone, this method didnt work either:

    redmondpie.com/jailbreak-iphone-3gs-ios-4-already-jailbroken-using-spirit-with-spirit2pwn/


    please help!
    07-15-2010 07:09 PM
  6. theringer's Avatar
    first i need to jailbreak iphone, this method didnt work either:

    redmondpie.com/jailbreak-iphone-3gs-ios-4-already-jailbroken-using-spirit-with-spirit2pwn/


    please help!
    I used that method on my phone and it does work. I found a few peculiarities along the way tho.

    Just saying "it didnt work" isnt helpful. What part didnt work? What error did it give?
    07-16-2010 10:10 AM
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