Unlock iphone 3G 4.2.1

Discussion in 'Jailbreaks and iOS Hacks' started by Ponchobot, Apr 21, 2011.

  1. Ponchobot macrumors member

    Apr 11, 2011
    What would the easiest way be to unlock the iPhone 4.2.1. I tried ultrasn0w and yet the second i download the package the phone starts searching for signal and never ever finds it.. Would there be a way around this or is there something i am doing wrong with this? any help would be great.
    I would be wanting to unlock to go to TMobile
  2. Crystal-RX macrumors 68030


    Dec 22, 2008
    Seattle, WA USA
    Your phone is not working or unlock because you have a 05.15 baseband on your phone and Ultrasn0w does not work for this baseband.

    Currently, there is no unlock for this baseband. However, if you are willing to upgrade to Ipad baseband, then you can unlock it with ultrans0w. There is consequence if your phone has this baseband. You should read more before you decide to proceed with this.
  3. Ponchobot thread starter macrumors member

    Apr 11, 2011
    How would i go about changing the baseband and where could i read about the risks?
  4. eastercat macrumors 68040


    Mar 3, 2008
    Google for the dev team blog.

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