I was able to downgrade to 3.1.2... But

Discussion in 'Jailbreaks and iOS Hacks' started by mcprobie, Jun 22, 2010.

  1. mcprobie macrumors member

    mcprobie

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    #1
    So yes ... Last night I was trying to get my iPhone with the stock 3.1.3 firmware activated (it has been lying around unusable for about 3 months or so after it was upgraded "accidentally" by my spouse - don't ask)...

    Since everybody and his dog knows this firmware is as of yet not JB'able and unlockable unless some requirements are met ... Which my iPhone didn't have.

    Being a bit frustrated and killing time I decided to try a downgrade to 3.1.2 and then JB with Blackra1n so I could use Pwngatool 4.0 to create a custom ipsw and upgrade to 4.0 firmware. Low and behold it worked ... I still can't believe it myself.

    Now ... I have to say ... I didn't just try it ... I'll give you the low-down of what I did:

    - I put the iPhone into DFU
    - I opened a connection to the iPhone with iRecovery
    (or vice-versa, can't really recall)

    - I started the alt-restore in iTunes with the 3.1.2
    - The restore procedure checked the Apple sites for the restore a few times but went through with the restore anyway.
    - I JB'd with Blackra1n
    - I upgraded to iTunes 9.2
    - I restored with the custom ipsw created with pwngatool 4.0
    - installed Ultrasn0w 0.93

    I now have a 3GS with iOS4 unlocked.

    My question is ...

    How was I possible to downgrade? Did someone experience the same thing?
    Was it the procedure I used?

    Just wondering.

    [edit] For the record, I do not, nor did I ever had the SHSH files stored locally or on the Cydia servers
     
  2. TMar macrumors 68000

    TMar

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    #2
    Your the second one to mention this tonight, the fact the apple somehow still signed off on a restore of 3.1.2 ...
     
  3. mcprobie thread starter macrumors member

    mcprobie

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    #3
    Yes ... Besides being lucky or the iRecovery did something, the only explanation I could think of is that Apple signed off on the restore ... Who knows why ...
     
  4. TMar macrumors 68000

    TMar

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    #4
    I don't see how irecovery could have anything to do with it. Apple might be having issues server side that could cause it. Who knows lol.
     
  5. bisk macrumors newbie

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    Sep 2, 2009
    #5
    I was able to downgrade my 3GS to 3.1.2 last night as well. Now I just need someone to release a JB solution for Windows :)
     
  6. jlmitnick macrumors regular

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    Sep 22, 2009
    #6
    :( I must have missed this window...just tried it, and the apple servers rejected me!
     
  7. coledog macrumors 6502a

    coledog

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  8. TMar macrumors 68000

    TMar

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    #8
    I went from 3.1.3 on spirit to JB 4.0 on my 3gs and didn't have to get the hackintosh running..
     
  9. coledog macrumors 6502a

    coledog

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  10. TMar macrumors 68000

    TMar

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    #10
    Well I had to downgrade and re-JB with redsn0w. gotta take two steps back before you can take one forward.
     
  11. coledog macrumors 6502a

    coledog

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    #11
    Apple's servers won't let me downgrade to 3.1.2. Says my phone isn't authorized or something.
     
  12. TMar macrumors 68000

    TMar

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    #12
    Yeah they no longer sign restores of older firmwares. That's why you have to edit your host file and have your blobs on file.
     
  13. coledog macrumors 6502a

    coledog

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    #13
    Ohh...Well that bums...Is is possible to use other blobs?
     
  14. Melodic macrumors member

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  15. TMar macrumors 68000

    TMar

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    #15
    Other people's blobs? No it's tied to your ECID.
     
  16. mcprobie thread starter macrumors member

    mcprobie

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    #16
    Wow ... It seems me and a few others where very lucky yesterday ... Bummer they already closed it down again :(
     

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