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Thread: 5110 DSP ROM v4

  1. #1

    5110 DSP ROM v4

    In attach full DSP ROM

  2. #2

    How read?

    Hi

    How did you read the DSP ROM program area when it is protected?

  3. #3
    There is a security hole.

  4. #4
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    How is it normally protected?

  5. #5
    Originally posted by wumpus
    How is it normally protected?
    TI writes in datasheet:
    Emulator cannot run.
    Instructions from on-chip ROM can read data from on-chip ROM.
    Instructions from on-chip RAM or external program cannot read data from on-chip ROM and will read FFFFh.

  6. #6
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    Cool, and you managed to rip it anyway

    They state that in what datasheet? Which chip is so alike the MAD but has a datasheet around?

  7. #7
    It's a common datasheet for all c54x family.
    TMS320C54x DSP Reference Set, Volume 1, p3-30.

  8. #8
    What software are you using for reading DSP ?

    It could be possible with "studio" from TI ?

    Or with modified knok ?

    Thanks, i'm trying to do the same with 3320 (TDMA)

  9. #9
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    I think he used his ICE (In Circuit Debugger) to read the memory ranges, not sure though, he found a security hole in the DSP ROM protection.
    No modified KNOK could do it though. It is not flashable or even in the MCU memory range.

    AlexD:Any change you can get the DSP ROM6 dump?
    Last edited by wumpus; 02-09-2003 at 09:36 PM.

  10. #10
    ICE is useless in reading ROM, it simply doesn't work with DSP.
    So Code Composer Studio is useless too.

  11. #11
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    I *think* I know which security hole.. hmm... takes a lot of poking and jumping around in DSP rom, that's for sure.

  12. #12
    The listed ROM4 is gone... does anybody still have it?

  13. #13
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    try this site (don't know if it's ROM4 though)

    http://www.geocities.com/nok5rev/

    just scroll down and you'll see the link to donwload
    searching and asking won't kill you, will only make you wiser (please search before you ask! )
    -------------------------------------------------------------
    Asking how is like traveling the entire space in 3 seconds. (Nokdoc)

  14. #14
    AlexD took the ROM out of the DSP. It is not in the phone firmware. Maybe somebody still has that file.
    On the link you gave me it's a normal 5110 flash file.

  15. #15
    AlexD gave me this:

    Hope it will help you too
    Attached Files Attached Files

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