iPhone Factory Unlocked iPhone 3GS

Discussion in 'Jailbreaks and iOS Hacks' started by justein, Jul 11, 2012.

  1. justein macrumors member

    Joined:
    Jun 25, 2012
    #1
    I have many questions about this unlocking process of factory unlocking an iPhone 3GS. First, if I upgrade from 4.3.2 to 5.1.1 while preserving baseband, will the phone still factory unlock? Second, if I downgrade (while preserving baseband or while not preserving baseband) would it still be factory unlocked? Thanks so much to anyone who answers!
     
  2. dhlizard macrumors G4

    dhlizard

    Joined:
    Mar 16, 2009
    Location:
    The Jailbreak Community
    #2
    If the phone is IMEI unlocked, firmware and baseband is now irrelevant.
    It will always stay unlocked.
     
  3. gngan macrumors 68000

    gngan

    Joined:
    Jan 1, 2009
    Location:
    MacWorld
    #3
    Preserving baseband is for software unlock or hardware unlock. Wouldn't it be pointless if a factory unlock phone needs to an unofficial software from third parties to preserve the baseband? You are thinking too much.
     
  4. justein thread starter macrumors member

    Joined:
    Jun 25, 2012
    #4
    Response

    Yes, but what about downgrade, which isn't supported by Apple? Will it still work?
     
  5. dhlizard macrumors G4

    dhlizard

    Joined:
    Mar 16, 2009
    Location:
    The Jailbreak Community
    #5
    Once IMEI unlocked, it was remain unlocked.
    No other way to say it.

    Now you can "what if" forever, the answer remains the same.
     
  6. justein thread starter macrumors member

    Joined:
    Jun 25, 2012
    #6
    Reply

    OK. I will test this on an iPhone 3GS that I have that is factory unlocked.
     
  7. justein thread starter macrumors member

    Joined:
    Jun 25, 2012
    #7
    It worked!!!

    Downgraded to iOS 4.1, and my factory unlocked was kept! No baseband preserved!
     
  8. NicoleRichie macrumors 6502

    Joined:
    Jun 30, 2007
    #8



    http://osxdaily.com/2012/04/21/unlock-iphone-att-web-technical-support/
     
  9. Trauma1 macrumors 6502a

    Joined:
    Jun 15, 2009
    #9
    False, on both counts.

    There are phones sold in the US without any carrier locks, and AT&T will unlock out-of-contract phones.
     
  10. gngan macrumors 68000

    gngan

    Joined:
    Jan 1, 2009
    Location:
    MacWorld
    #10
    You are wrong. There are phones that do NOT require 'official carrier releases information to Apple' in order to unlock it. I paid full price for my 3G/3GS/4S and it's unlocked. In fact, there's NO locked phone in Hong Kong.

    US have been selling factory unlock phone last year. AT&T USED to not unlock phones but their policy have changed and they WILL unlock it.

    It's nice to try and help but you are not helping. You are giving out wrong information. Newbies' need to learn more before giving out advise.
     
  11. Xenomorph macrumors 65816

    Xenomorph

    Joined:
    Aug 6, 2008
    Location:
    St. Louis
    #11
    What the hell are you smoking? Is this some copy and paste from 2009???

    - Unlocked iPhones can be purchased in the U.S. without belonging to any "carrier", so unlock information does not need to come from the carrier.

    - All phones sold in the U.S. are not carrier locked to AT&T.

    - All iPhones sold in the U.S. are not carrier locked to AT&T.

    - AT&T can unlock any iPhone locked to them at any time, and have already unlocked many iPhones at customers' requests (including my 3GS!).

    - iOS4 came out in 2010.
     

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