Do I have the old bootrom?

Discussion in 'Jailbreaks and iOS Hacks' started by packgrad2000, Jun 23, 2010.

  1. packgrad2000 macrumors regular

    Sep 19, 2007
    From the serial number, my iPhone 3GS was made in Week 39 of 2009, which I think puts it in the gray area of old vs. new bootrom. However, I bought it already jailbroken/unlocked, and I am able to turn it off and back on without being tethered. Does this mean I'm on the old bootrom? I'm looking to upgrade to iOS 4.0 with the new PwnageTool 4.01. Also, will it remain unlocked as well as JB with the new Dev Team tools?
  2. farmermac macrumors 6502a

    Jul 23, 2009
    turn on/off with no tethering and being unlocked on 3.1.2 means old bootrom
  3. LaZyFLiP macrumors regular

    Jan 20, 2009

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