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Thread: 3gs with 4.1-i want to downgrade to 4.0 details in thread

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    Default 3gs with 4.1-i want to downgrade to 4.0 details in thread
    hey guys;
    i have a 3gs phone. 4.1 currently installed. shsh saved thru tinyumbrella while @ 4.0

    phone has been previously JB'd.

    I mistakenly loaded desktop/sms background on the phone and it jsut went ape ****. So was forced to do a full restore/upgrade to 4.1 thru itunes to make phone workable again.

    so i have lost my JB and would like to get back to the 4.0 OS so that i can JB the phone again.

    Since the shsh was saved thru tiny umbrella, is there a link to a tutorial or step by step instructions as to how to go about doing the downgrade to get me back to 4.0?

    Appreciate any assistance.

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    Retired Moderator iYeow's Avatar
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    You said you have saved it locally , on your tiny Umbralla click Display shsh, if it is there, You have to click advanced optin ,then Under the device/version, highlight 3GS 4.0 shsh Make sure your hosts file has this line 127.0.0.1 gs.apple.com. Put your Iphone into DFU mode and start tiny server.
    Do the Shift + Restore to 4.0 ipsw.

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    excellent.
    appreciate it.
    i did use tiny umbrella. didnt know it saved it locally tho. but either way, sauriks server or local, as long as its saved somewhere and useable, its all good. :tup:

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    Retired Moderator iYeow's Avatar
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    Bear in mind, if you can restore to 4.0, you can only jailbreak but not unlock.

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    no problem on the unlock. stuck with the "death star" right now. :/

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