iPhone 3G 3.1.3 05.12.01 baseband, update and unlock?

Discussion in 'Jailbreaks and iOS Hacks' started by iSkyy, Jun 2, 2011.

  1. iSkyy macrumors newbie

    Jun 2, 2011
    Hello MacRumors!

    I feel a bit bad about my first post being a help request already but I need help, all the googling and looking around still left me uncertain :eek:

    As the title states I have a iPhone 3G on 3.1.3 with a 05.12.01 baseband which I now want to wipe and update to 4.x and unlock it for use with all carriers.

    From my understanding I need to update while preserving my baseband, that much I got. So far I used Sn0wbreeze 2.2.1 to make a custom 4.2.1 IPSW which was successful and afterwards I wanted to use Ultrasn0w but I don't want to mess up so I wanted to have a confirmation that what I do is right... so yeah any help is greatly appreciated, thanks in advance!
  2. Crystal-RX macrumors 68030


    Dec 22, 2008
    Seattle, WA USA
    Just install ultrasn0w 1.2.3 from cydia to unlock your phone.
  3. awadeee macrumors 68020


    Jan 21, 2011
    Viper City
    What you are thinking is correct, OP. Restore with iTunes and then unlock with Ultrasn0w. You will find it under Manage > Sources > repo666.ultrasn0w.com.

    Enjoy your unlocked phone! :p

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