Danger installing 4.2 on iPhone 3GS running 4.0

Discussion in 'Jailbreaks and iOS Hacks' started by frasco, Jan 5, 2012.

  1. frasco macrumors newbie

    Joined:
    Jan 5, 2012
    #1
    On my unlocked jailbroken iPhone, the Apple Apps store often wants to
    'upgrade' my OS 4.0 to 4.2. I have not accepted the request. What are
    the consequences of accepting the offer to 'upgrade' to 4.2?
     
  2. Crystal-RX, Jan 5, 2012
    Last edited: Jan 5, 2012

    Crystal-RX macrumors 68030

    Crystal-RX

    Joined:
    Dec 22, 2008
    Location:
    Seattle, WA USA
    #2
    You might want to double check whether you have a 3G or 3GS. If Itunes asks you to upgrade your phone to 4.2.1, then you have a 3G. Otherwise, it will ask you to upgrade it to 5.0.1 now

    In any way, if your phone is not factory unlocked, then it will lock back to original carrier once you update it to the latest firmware.
     
  3. frasco thread starter macrumors newbie

    Joined:
    Jan 5, 2012
    #3
    Many Thanks for the quick reply.
    I thought so. I would have to 'unlock' all over again if I understand you
    correctly.

    btw, I'm sure it's a 3GS.
     
  4. Crystal-RX macrumors 68030

    Crystal-RX

    Joined:
    Dec 22, 2008
    Location:
    Seattle, WA USA
    #4
    that is correct.

    What make you think you have a 3GS? List out few things different between the 2.
     
  5. frasco thread starter macrumors newbie

    Joined:
    Jan 5, 2012
    #5
    Hi.
    I have the original packing material...the phone was formerly
    related to AT&T...I am the first and only owner.

    The Model # is: MB715LL

    The Version Firmware # is: 05.13.04

    The Version is: 4.0 (8A293)
     
  6. Crystal-RX macrumors 68030

    Crystal-RX

    Joined:
    Dec 22, 2008
    Location:
    Seattle, WA USA
    #6
    It is a 3GS. If you plug into Itunes, it should inform you that there is 5.0.1 fw available for upgrade and not 4.2.1.
     

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