Can I still downgrade to 4.1?

Discussion in 'Jailbreaks and iOS Hacks' started by cmm, Dec 8, 2010.

  1. cmm macrumors 6502a

    Joined:
    Apr 30, 2006
    Location:
    Manhattan & Zürich
    #1
    I have an iPhone 3GS with a genuine 4.2.1 iOS.

    I was going to downgrade right after I upgraded but I got very busy.

    I have my 4.1 shsh blobs -- can I still downgrade to 4.1 (I need 4.1 for the AT&T carrier tethering hack)? How do I do this?
     
  2. dissizitt macrumors member

    Joined:
    Oct 16, 2010
  3. cmm thread starter macrumors 6502a

    Joined:
    Apr 30, 2006
    Location:
    Manhattan & Zürich
    #3
    I'm getting error 22 when I use my custom restore ipsw and another (I think it was 1015) when I use the 4.1 IPSW from http://www.felixbruns.de/iPod/firmware/ .

    I have "3354604965262-iphone-4.1.shsh" in ~/.shsh and TinyUmbrella does see that.

    Anything I can do to get down to 4.1 again?
     
  4. Applejuiced macrumors Westmere

    Applejuiced

    Joined:
    Apr 16, 2008
    Location:
    At the iPhone hacks section.
    #4
    After you're done with the restore and get the error message go to TU and click "kick device out of recovery".
    After that the iphone should boot up with 4.1 installed.
     
  5. cmm thread starter macrumors 6502a

    Joined:
    Apr 30, 2006
    Location:
    Manhattan & Zürich
    #5
    Ah, sweet! Thanks! I'll try now. :)

    Should I use the custom restore that I made, or a generic one for my specific iPhone model (3GS)?

    For 4.1, what is the best way tethering hack available? Edit the mobilconfig file?
     
  6. Applejuiced macrumors Westmere

    Applejuiced

    Joined:
    Apr 16, 2008
    Location:
    At the iPhone hacks section.
    #6
    Either one ipsw will do.
    About tethering my favorite is MyWi.
     

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