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Thread: How to upgrade Jailbroken & Unlocked iPhone 3gs running iOS 3.1.3 to 4.0 or 4.0.1

  1. #21
    Unhappy blacklisted/stolen Iphone please help
    hi all,

    I have a iphone 3g that is blacklisted in UK. however after unlocking it is working fine in India.

    It has a very old firmware and I think it is 3.0. can I upgrade it to 4.0 firmware and unlock it again. I am concerned that if I upgrade it using the normal procedure in itunes, apple may not authorize the upgrade as the IMEI no. is blacklisted.

  2. #22
    Retired Moderator iYeow's Avatar
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    You can go for 3.1.3, just shift + restore to 3.1.3 . You can follow this guide :
    How to Jailbreak/Unlock 3.1.3 iPhone 2G Windows & OS X

    Don't update to 4.0, it is slow and lag.
    Last edited by iYeow; 2010-12-04 at 02:52 AM. Reason: Automerged Doublepost

  3. #23
    Thank you for replying.

    my main concern about updating my iphone is that itunes verifies the update with apple. i m worried that apple will detect that my ph is blacklisted and i may have problems due to it. Is there a way of avoiding the verification step while upgrading??? also can i unlock my ph if i upgrade it to 4.1? please help...

  4. #24
    Retired Moderator iYeow's Avatar
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    To upgrade to 4.1, you will need to restore to custom firmware either by Pwnage tools 4.1.2 or Snowbreeze 2.0.2/2.1.
    You need to run tiny umbrella and save your 4.1 shsh blogs first, then start tss server.
    Use Redsn0w 0.9.6b6 to put you into dfu mode
    Open up itunes and shift + restore to this cfw of 4.1 .
    This way your BB is being preserved at what you currently have to be able to unlock with Ultrasn0w.
    As to the blacklist thing, i am not sure if this is going to be an issue.

  5. The Following User Says Thank You to iYeow For This Useful Post:

    anita21 (2010-12-21)

  6. #25
    use redsn0w & edit your HOST file to use Sauriks auth server, then you should be fine.

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