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Thread: 3G Downgrade from 4.0.2 to 4.0.1 WITHOUT SHSH:

  1. #1
    Default 3G Downgrade from 4.0.2 to 4.0.1 WITHOUT SHSH:
    So someone paid me to unlock their iphone but theirs was on 4.0.2 and i looked around trying to see if i could downgrade without a shsh file saved locally or on sauriks server, and stumbled upon dough boy's thread. The first video he posted DID NOT WORK but i changed something to see if it might and a member said SHSH does not need to be saved and someone said it does so i dont know which is which but anyways here's the directions

    1.
    download tinyumbrella-latest version
    itunes latest version
    iphone 3g on 4.0.2
    go to felix and download 4.0.1
    enter the iphone into dfu mode
    edit your host file so it looks like the one below--i used wordpad with admin mode on windows 7
    i deleted
    # 127.0.0.1 gs.apple.com and
    gs.apple.com so i only had this


    ##Hosts file edit

    127.0.0.1

    #74.208.105.171 gs.apple.com


    i dont know if this is needed but i saved the 4.0.2 shsh
    and ran the tinyumbrella server on admin mode
    that is my exact host file that i am using to do this
    shift click restore on and point to 4.0.1 and bam
    it works
    ill post up pics and some videos if ppl want the videos, they're long though and i mumble haha
    but for tinyumbrella i do have 4.0.1 and 4.0.1 saved for MY iphone4 along with the 4.0.2 saved for the iphone 3g
    it might work for a 3gs but i don't have one so i can't test it out

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    Last edited by swaneon; 2010-08-30 at 01:40 AM.

  2. #2
    Superbad Modder-ator Simon's Avatar
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    You do not need SHSH for iphone 3G, at least not in the same way as an iphone 3GS or iphone 4. There is what is referred to as a "soft SHSH" that apple just started to implement with 4.0 that MuscleNerd of the Dev team explained a while back but it can be easily circumvented by using redsn0w or pwnage tool. It is .ipsw based SHSH so it only applies to 4.0 and up (although I have had little trouble restoring a iphone 3G to 4.0 or 4.0.1 without SHSH).
    Last edited by Simon; 2010-08-30 at 12:30 AM.

  3. #3
    oh
    lol i posted this up because someone else asked

  4. #4
    Superbad Modder-ator Simon's Avatar
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    Its cool, you are actually showing people how to point their hosts to cydia's servers if they want to downgrade without using redsn0w or pwnage tool. You probably dont need to show all your adobe hosts files though
    Last edited by Simon; 2010-08-30 at 12:40 AM.

  5. #5
    oh haha true, thanks though
    i mean i couldn't find a guide online to do this except that but i wish i would've

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    Just downgrade to 3.1.x. Runs better on a 3G anyway and you wont need SHSHs for that, like x98car said.

  7. The Following User Says Thank You to i.Annie For This Useful Post:

    Simon (2010-08-30)

  8. #7
    Superbad Modder-ator Simon's Avatar
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    Quote Originally Posted by Anniex423 View Post
    Just downgrade to 3.1.x. Runs better on a 3G anyway and you wont need SHSHs for that, like x98car said.
    I definitely agree, downgraded my 3G to 3.1.3 just for the better performance.

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