This is no request thread! HP COMPAQ bioses, how to modify the bios?

Discussion in 'BIOS Mods' started by Yen, Aug 6, 2009.

  1. Hotpepper

    Hotpepper MDL Novice

    Aug 1, 2009
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    Hi Yen,

    In a Chinese forum they told another way should be in memory patching of the bios image when running HPQFlash. Of course there is the BIOS image in the memory and the flash tool only checks the Rom.sig when starting and loading the image. But do you see a change that this also fixes the checksum problem? What is the status of this checksum problem? Did you find a solution?

    Best regards,
    Hotpepper
     
  2. Yen

    Yen Administrator
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  3. Yen

    Yen Administrator
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    This sounds good to me. AFAIK is the checksum check before it flashes as well, so you may edit the physical memory....or better we have to know how to patch the flasher.....
     
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  4. gregg

    gregg MDL Novice

    Aug 7, 2009
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  5. Hotpepper

    Hotpepper MDL Novice

    Aug 1, 2009
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    Hi Yen,

    thanks for your answer. Of course it's very uncomfortable to edit memory. Having a patched flash program is even better!

    One question that I have before I want to try it with memory patching is that if I patch the SLIC correctly, will the BIOS work and not render my laptop unusable? I've read something that HP BIOS will check it's checksum on boot and will not work if something is wrong.

    What is your point of view about that?
     
  6. gregg

    gregg MDL Novice

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  7. Yen

    Yen Administrator
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  8. Yen

    Yen Administrator
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    At the bios 68YVD.BIN there is only one occurrence of marker and he used a patched rompaq.exe instead of the HPQFlash.exe.
    We should know how to patch your rompaq.exe for a new try...
    gregg, the above rompaq.exe doesn't work for you?
     
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  9. Yen

    Yen Administrator
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    Pyotr
    From where have you got the patched rompaq.exe? It seems quite different to the original provided with the F.16 bios...
     
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  10. mutante

    mutante MDL Novice

    Jul 20, 2009
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    HPQFlash

    The HPQFlash I have posted is patched by me, I mean it's new ...
     
  11. sebus

    sebus MDL Guru

    Jul 23, 2008
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    On my 6715b with 68YTT.BIN with HEX edited dual marker ONLY using

    - rompaq.exe 4.69 from Pyotr:
    rompaq starts, does NOT complain about "Error in file content read" , seems to starts flashing, but then exists from it & nothing happens (nothing good or bad)

    - HPQFlash v310F1 from Yen:
    starts and then gives error: "0xFA (IOCTL_FAILED)"

    - HPQFlash v4253 from gregg's HPQFla_8710w.zip complains that can NOT find the version in rom.cab (as I believe it is the WRONG version for my model)

    sebus
     
  12. Yen

    Yen Administrator
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    Would you please explain how to patch it? Are you able to patch the rompaq.exe as well?
    sebus, what about to provide your modified bios just pack it into the cab archive..
     
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  13. gregg

    gregg MDL Novice

    Aug 7, 2009
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    #57 gregg, Aug 9, 2009
    Last edited by a moderator: Apr 20, 2017
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  14. Pyotr

    Pyotr MDL Novice

    Sep 6, 2007
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    Yes that’s right it is actually from nx9420 package latest bios, but in that threads http://forums.mydigitallife.info/showthread.php?t=7265&page=3 page3 you get more info its bit longer story
     
  15. Yen

    Yen Administrator
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  16. yasanagy

    yasanagy MDL Novice

    Sep 29, 2008
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