Does upgrading to 4.0 change your baseband?

Discussion in 'Jailbreaks and iOS Hacks' started by bk120, Jun 23, 2010.

  1. bk120 macrumors newbie

    Jan 3, 2009
    I currently have an jailbroken and unlocked iphone 3gs firmware 3.1.2 with baseband 5.11.07, I used blackra1n. I wanted to upgrade to 4.0 I hear that you can jailbreak/unlock 4.0. But if i upgrade does change your baseband? Does anyone know?
  2. Blazing angel macrumors regular

    Jun 19, 2010
    it does, to 5.13.0, but a new ultrasn02 from is out, and unlocks it:p
  3. thelatinist macrumors 603


    Aug 15, 2009
    Connecticut, USA
    As your phone is currently pwned, you can update to a custom 4.0 firmware made with PwnageTool without updating your baseband. Either way, I suggest you use ultrasn0w to unlock instead of blacksn0w; it's a much more stable unlock.

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