Can i swap out the new 3gs bootrom with a 2g ipod touch bootrom?

Discussion in 'Jailbreaks and iOS Hacks' started by pcs are junk, Jan 23, 2010.

  1. pcs are junk macrumors 65816

    Joined:
    Sep 28, 2009
    #1
    hi guys, i am dieing for an untethered jailbreak, and i was just wondering if i can replace my iphone 3gs's bootrom with the one in my ipod touch. are they the same size and shape? are they compatible? this information would be very much appreciated. i am probably not going to do it cuz i dont want to void the warranty or screw anything up...so its just for educational purposes. thanks in advance?
     
  2. NathanA macrumors 6502a

    Joined:
    Feb 9, 2008
    #2
    I could be wrong, but I'm pretty sure that the bootrom is actually fixed in silicon located directly on the CPU die, not in a separate ROM chip. (Which is partly why I believe the iPhone 3G's bootrom has, to date, not been updated to patch the Pwnage bug in the S5L8900 bootrom DFU code, since it would be a hassle to produce another rev of the CPU simply to fix that hole, and is also why I was really surprised when Apple started manufacturing 3GS phones that patched out 24kpwn in the bootrom. 'cause if they bothered to do it with the 3GS, why not with newly-manufactured 3G phones, too?)

    Even if that wasn't the case, the bootrom code is very closely tied to the CPU itself, so, even IF an iPod ROM chip was pin-compatible with the iPhone one, it is extremely doubtful that it would succeed in booting up the device properly.

    So, no.

    -- Nathan
     
  3. CocoaPuffs macrumors 68010

    Joined:
    Aug 23, 2008
    #4
    why would you ask or consider something that you obviously won't be able to do?
     
  4. Applejuiced macrumors Westmere

    Applejuiced

    Joined:
    Apr 16, 2008
    Location:
    At the iPhone hacks section.
    #5
    He won't be able to answer that.
    He's on time out:)
     
  5. KidPub macrumors member

    Joined:
    Dec 8, 2009
    #6
    Why not?

    Jut get a diamond saw and cut out the gates that implement the boot code on the die on the 2G. Drop a bit of solder paste on the 3GS CPU, sldide the 2G die piece into place, and solder. I recommend using a torch rather than a soldering iron, you'll get better heat distribution.

    Let us know how it goes.
     
  6. SpaceKitty macrumors 68040

    SpaceKitty

    Joined:
    Nov 9, 2008
    Location:
    Fort Collins Colorado
  7. Applejuiced macrumors Westmere

    Applejuiced

    Joined:
    Apr 16, 2008
    Location:
    At the iPhone hacks section.
    #8
    Cousin
     
  8. thelatinist macrumors 603

    thelatinist

    Joined:
    Aug 15, 2009
    Location:
    Connecticut, USA
    #9
    Hey, I've got my problems with TheSpaz, but at least the guy gets most of his facts straight.
     
  9. labman macrumors 604

    labman

    Joined:
    Jun 9, 2009
    Location:
    Mich near Detroit
    #10
    Wow 1+

    I think you are on to something here. Could also be Spaz himself.
     
  10. thelatinist macrumors 603

    thelatinist

    Joined:
    Aug 15, 2009
    Location:
    Connecticut, USA
    #11
    I'm undecided at this point about whether pcs_are_junk is a troll or just incredibly naïve and ignorant. If the latter, I would like to give him a chance to learn; but he really needs to stop spreading misinformation while he does his growing up.
     

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