iPhone 3gs - firmware and baseband

Discussion in 'iPhone' started by superway, Aug 2, 2012.

  1. superway macrumors newbie

    Jul 30, 2012

    Iphone 3gs, 32gb
    firmware: 5.1.1
    baseband 05.13.04

    After following instruction to unlock my phone, there is still NO SERVICE for Tmobile. I would like to ask 2 question.

    1. Are my firmware (5.1.1) and baseband (05.13.04) NOT compatible to unlock?

    2. Is it supposed to be firmware (4.0.1) and baseband (05.13.04) ARE compatible?

  2. Sirus2400 macrumors regular

    Jun 25, 2008
    FWIW I'm on the same firmware/BB combo and using an unlock in Canada (Which I've also used with Orange in the UK and on ATT prepaid in the states) so you should be able to unlock with ultrasn0w after you've jailbroken your 3GS.
  3. wx4olf macrumors regular


    Jun 15, 2010
    I would recommend searching the ios hacks section. There are several threads discussing this that may helpful.

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