What to upgrade and unlock old 3G (3.0) - what are the best steps?

Discussion in 'Jailbreaks and iOS Hacks' started by brasskey, Dec 6, 2010.

  1. brasskey macrumors regular

    Jul 21, 2008
    What would be the best steps to upgrade an older 3G to as new a software version as safely possible and unlock? I would like to move a SIM card from a Razr that was damaged to my old 3G without upgrading the plan ($30 data/month charge). Is that possible? Below are the specs on the phone:

    iPhone 3G
    Version 3.0 (7A341)
    Carrier AT&T 5.5
    Model MB048LL
    Modem Firmware 04.26.08

    EDIT: Meant to say "want to upgrade..." in title
  2. Junkboxy macrumors member

    Sep 17, 2008
    If u r looking for a step-by-step tutorial, I roll with those on iClarified. If you just want to unlock your phone as is, then find the right tutorials with the right variables in the title, i.e. 3G and OS 3.0. I believe you can do the quicker jailbreak known as RedSn0w, and then you have the capability to unlock via UltraSn0w, which is described in it's own tutorial.

    On a side note: My two experiences on version 4.X on a 3G were inferior to the version 3.0. I caution against upgrading to 4.X. 4.0 = slow, and 4.1 = battery hog (though it may be the fault of multitasking enabled)
  3. brasskey thread starter macrumors regular

    Jul 21, 2008
    Wirelessly posted (Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_1 like Mac OS X; en-us) AppleWebKit/532.9 (KHTML, like Gecko) Version/4.0.5 Mobile/8B117 Safari/6531.22.7)

    Thanks for the help. I'll try those steps.

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