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Thread: Updated to 4.0.2, can I downgrade?

  1. #1
    Exclamation Updated to 4.0.2, can I downgrade?
    Im on a 3gs , yes i was jailbroken before i updated. Correct me if im wrong but there is no jailbreak for 4.0.2 so id like to go down to 4.0.1. Can i downgrade? if so how

  2. The Following 2 Users Say Thank You to Gunnz3gs For This Useful Post:

    aram200de (2010-08-25), seven72 (2010-08-25)

  3. #2
    You can downgrade if you saved your 4.0.1 shsh blobs through Cydia or Tiny Umbrella.

    Does your Cydia app page show that it was saved?

  4. #3
    Yeah it showed a bunch of versions i was saved on

  5. #4
    iPhone? More like MyPhone GranDaddyPurp's Avatar
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    Then yes you can downgrade.
    I Take Three L's To The Head...Love, Live, Life then I'm Dead

  6. #5
    After that, i can jus jailbreakme?

  7. The Following User Says Thank You to Gunnz3gs For This Useful Post:

    fgoson (2010-08-27)

  8. #6
    Here's a nice step by step on how to do it:

    Downgrade iPhone 3GS iOS to 4.0.1 - The EASY Way | TechPinas : Philippines' Technology News, Tips and Reviews Blog

    yes - you can jailbreakme.com after you've restored it to 4.0.1

  9. The Following User Says Thank You to ny888 For This Useful Post:

    Gunnz3gs (2010-08-24)

  10. #7
    btw how do i get past the sim activation

  11. #8
    Quote Originally Posted by Gunnz3gs View Post
    btw how do i get past the sim activation
    You don't have the original sim? I don't have experience with hacktivation but here's a tutorial I found -

    Activate iPhone 4, iPhone 3GS and iPhone 3G Without Original SIM [Video] | Redmond Pie

  12. #9
    Without an official carrier sim or the phone book sim, you may not be able to activate the phone. The best way is to downgrade the phone further down to Firmware 3.1.2 and use blackrain to jailbreak and hacktivate. Once you have done that, you can then upgrade to iOS 4.0 by using Pwnagetool or sn0wbreeze. That should work.

  13. #10
    Retired Moderator iYeow's Avatar
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    Azraeil is correct, there is no hactivation for 3GS on OS 3.1.3, 4.0, 4.0.1.
    You need either the official sim card or the phonebook sim card to activate.

  14. #11

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