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Thread: 3GS will NOT downgrade

  1. #21
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    From memory it says invalid firmware file. Its weird cus my iphone 4 was fine. No problem downgrading all was smooth but this error just keepa popping up straight away. Ive tried a Few different firmware files and one from that apple site from memory but i will try again and make sure i get the right firmware. Also can you jailbreak 4.02 ive looked around but really find a solid answer. Pref id like to downgrade if possible.

    P.S the 3gs runs really slow with 4.02?

    Thanks for the help

  2. #22
    Retired Moderator j3st3r's Avatar
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    no 4.0.2 is not jailbreakable on the 3GS or iPhone 4

  3. #23
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    So I just downloaded this firmware

    http://appldnld.apple.com.edgesuite....3_Restore.ipsw

    Still no go. Firmware file invalid in newer versions and the older version of iTunes I downloaded was not comatible with iPhones it was iTunes 9 or so. So what now? How do I downgrade my 3GS to 4.01 or 4.0?

  4. #24
    Retired Moderator Orby's Avatar
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    Quote Originally Posted by onlinegamesnz View Post
    So I just downloaded this firmware

    http://appldnld.apple.com.edgesuite....3_Restore.ipsw

    Still no go. Firmware file invalid in newer versions and the older version of iTunes I downloaded was not comatible with iPhones it was iTunes 9 or so. So what now? How do I downgrade my 3GS to 4.01 or 4.0?
    OP, run a digest on that 4.0.1 .ipsw file. Your file should match the values below.
    iPhone2,1_4.0.1_8A306_Restore.ipsw (396,281,280 bytes)
    MD5: a3104ca3b72a91bc7eff037ee320ecc5
    SHA1: c2b6fb9a158547ce726baa1bf8f0558a71518fec
    SHA512: 1a925ecebb381725962c4ddb8b6ef1229d23612a04f6c0b6d6 376e55961a599e95f163bb0080af6f3020ce53137f36ff8434 cae5675e35a93c27dc4ea20bf12b

    ...If your values match (confirming the file is valid and not corrupted) then the only thing I can think of is something like you actually having a 3G and not a 3GS or something weird like that.

  5. #25
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    How exactly do you digest the file. Haven't done this before. Through cmd? I will do this an let you know an also confirm this Is a 3G phone I'm sure it is

    How do I tell if it's 3G or 3GS
    Last edited by onlinegamesnz; 2010-09-13 at 06:08 AM. Reason: Automerged Doublepost

  6. #26
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    Wheres all the help gone?

  7. #27
    iPhone? More like MyPhone SnR's Avatar
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    You can tell the 3G from 3GS because the 3G doesn't have video recording and the 3GS does. Check that first for us.

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