iPhone 3G 3.1.3 Unlock?

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

  1. dissizitt macrumors member

    Oct 16, 2010
    I have a iPhone 3G running 3.1.3 with 5.15.04 baseband. Wondering if this is unlockable without upgrading the firmware.
  2. Myzhi macrumors 6502a


    Dec 15, 2009
    5.15 baseband can't be unlock.

    And, to have 3.1.3 firmware & 5.15 baseband, it means the phone was updated to 4.2 firmware which also updated the baseband to 5.15. Then, the phone was downgraded to 3.1.3 firmware, but since baseband can't be downgraded, it stayed at 5.15. Thus, as you can see, upgrading the firmware or not won't matter.

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