1. Carter454's Avatar
    My iPhone 3GS is a mc model (new bootrom) but I got it on launch day? Is that possible?
    2010-07-14 05:24 PM
  2. Simtech's Avatar
    What firmware? Jailbroken now?
    2010-07-14 06:21 PM
  3. Carter454's Avatar
    4.0. Never been jailbroken because mine broke and I just got my moms. She got it on launch day but it says mc
    2010-07-14 06:36 PM
  4. Simtech's Avatar
    You can't jailbreak as of now. You'll have to wait for a new jailbreak tool.
    The MC doesn't mean anything, that only applies to Ipod Touches.
    You can't downgrade because you weren't previously jailbroken and didn't save your SHSH files for older firmwares (which is needed to downgrade).
    2010-07-14 07:34 PM
  5. Carter454's Avatar
    Okay is it new bootrom or old bootrom tho?
    2010-07-14 07:52 PM
  6. Simtech's Avatar
    To check iPhone 3G/3GS bootrom version:

    Put your iphone in DFU mode.
    (Connect your iPhone to iTunes, turn off, click power +home button for 10 seconds, leave POWER button after 10 seconds, holding HOME button)

    iTunes will detect your iPhone in recovery mode.

    Go To:

    Start->Control Panel->Device Manager

    In Universal Serial BUS Controller, you will find Apple Mobile Device USB Driver

    Right Click and go to Properties, go to Details tab and select "Device Instance Path" from the drop down list box.

    In that information, u will find [iBoot-359.x] at the end.

    On a Mac:

    Put the iPhone in DFU mode
    Then navigate to "About this Mac".
    From there go to "More Info...", and select USB on the list on the left.
    Under the USB menu you can select "Apple Mobile Device (DFU Mode)" and that will bring up information about the iPhone.

    About half way down it will have the iBoot information:
    It will either be [iBoot-359.3]-old or [iBoot-359.3.2]-new.
    To get it out of DFU mode just hold both the home and power button until it powers back on
    2010-07-14 07:53 PM