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Thread: I want to down grade 3GS 4.0.2, Need help fast!

  1. #1
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    Default I want to down grade 3GS 4.0.2, Need help fast!
    I have an iPhone 3GS with 4.0.2. Please tell me I can down grade it to the old software and Jailbreak it as well. If it is possible give me the most basic potato head way to do it.

  2. The Following 3 Users Say Thank You to jpguzzman08 For This Useful Post:

    annaporn (2010-08-13), Licho (2010-08-13), Quickmart (2010-08-28)

  3. #2
    You can check if Apple's still signing it by simply trying to downgrade in iTunes, they were still signing yesterday (not sure if it's still going on)

  4. #3
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    How would I do that?

  5. #4
    Download 4.0.1 for 3GS, then shift (or option for mac) click restore to the file in iTunes

  6. #5
    Quote Originally Posted by seanG View Post
    Download 4.0.1 for 3GS, then shift (or option for mac) click restore to the file in iTunes
    i downloaded the file but how do you use it in Windows? Does this erase anything once you run it?

  7. #6
    Retired Moderator Cer0's Avatar
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    In iTunes just shift click restore and point to that file.
    [CENTER][SIGPIC][/SIGPIC][/CENTER]

  8. #7
    oh ok. stupid me. does it erase anything like the regular restore button?

  9. #8
    Retired Moderator Cer0's Avatar
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    It wipes your phone like restore does.
    [CENTER][SIGPIC][/SIGPIC][/CENTER]

  10. #9
    iphone died yesterday amd mac store gave me a new one today. 3gs running 4.0.2 and probably new bootrom. i did click the make my life easier on cydia with my old phone, but im assuming that it wont do me any good snce i have a new phone now. im trying to downgrade to 4.0.1 and hope that itunes will just sign it. do i put the phone in dfu mode or restore mode?

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