Upgrade an iPhone 3GS to iOS4

Discussion in 'iPhone' started by reza888itp, Aug 31, 2010.

  1. reza888itp macrumors newbie

    reza888itp

    Joined:
    Aug 18, 2010
    #1
    Last year i purchased 3GS and vender ulocked it for my use
    iPhone 4 launched and apple annouced that iPhone 3GS can be upgraded to
    iPhone 4
    How it can be done successfully

    Anybody cann help me to use the new options available OS4 on my 3GS iPhone

    reza888itp
     
  2. shandyman Suspended

    Joined:
    Apr 24, 2010
    Location:
    Dublin, Ireland
    #2
    backup the 3GS, then update the iOS in itunes and it will have all the new OS on and have all your bits just how you left it.
     
  3. Applejuiced macrumors Westmere

    Applejuiced

    Joined:
    Apr 16, 2008
    Location:
    At the iPhone hacks section.
    #3
    How did the vendor unlock it for you?
    Is it a officially factory unlocked iphone or he Jailbroke it and unlocked it?
    If you update to the latest 4.0.2 version thru itunes and your iphone is not factory unlocked it will lock up and you will not be able to activate, JB or unlock it for the moment.
     
  4. reza888itp thread starter macrumors newbie

    reza888itp

    Joined:
    Aug 18, 2010
    #4
    reza888itp

    I nothing know exactly How did the vendor unlock it for you? or my iPhone unlocked by the factory, how I can discover this fact?

    If I upgrade through iTune, in the result of this upgrade as "Applejuiced" told that iPhone will be locked, then How I can it unlocked?

    Please reply required of both questions

    Anybody solve my problem

    reza888itp
     
  5. Snowman3459 macrumors 6502a

    Joined:
    Jun 15, 2010
    #5
    If the vendor jailbroke your phone and unlocked it from there, updating your phone to the current version (4.0.2) would disable your jailbreak, therefore locking it. It cannot be unlocked until someone releases a future unlock. Most likely with 4.1
     
  6. err404 macrumors 68020

    Joined:
    Mar 4, 2007
    #6
    In almost all cases, upgrading your iPhone will remove your unlock. Don't take this the wrong way, but I would not recommend that you upgrade and try to unlock it yourself. Jailbreaking and unlocking can be somewhat complex procedures and a lot can go wrong.
    You should try and take it back to the same vendor and have him upgrade it to 4.01 for you.
     
  7. reza888itp thread starter macrumors newbie

    reza888itp

    Joined:
    Aug 18, 2010
    #7
    reza888itp

    Thanks so much for the advice posted by err404 and Snowman3459
    reza888itp
     

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