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

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

  1. Yen

    Yen Admin
    Staff Member

    May 6, 2007
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    Update 15/11/2010:
    A lot of progress has been made already!
    - SLIC 2.1 for all models
    - SLP lock removed on all models
    - WLAN/WWAN whitelists removed
    - Windows and DOS patched flashing tools

    Have a look here:


    SLIC2.1 post

    and

    WWAN/WLAN whitelists removal post



    Here are good sources: some in German
    http://www.wimsbios.com/phpBB2/topic9388.html
    http://www.xtremesystems.org/forums/showthread.php?t=180607
    http://www.internetforen.de/viewtopic.php?t=9023&postdays=0&postorder=asc&start=30

    Decompression and tools:
    http://rapidshare.com/files/176078752/ADDCC.rar
     
  2. soretito

    soretito MDL Junior Member

    Jul 31, 2009
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  3. andmail

    andmail MDL Junior Member

    May 11, 2008
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    #3 andmail, Aug 6, 2009
    Last edited by a moderator: May 23, 2017
  4. sebus

    sebus MDL Guru

    Jul 23, 2008
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    It would be nice to find out:

    - if HP actually use CRCxx check
    - which block of the BIOS HEX HP uses for the CRC32


    Correcting just checksum32 is easy (as per Yen's links above), have to try rompaq with such "corrected" BIOS bin file

    sebus

    edit - having the same checksum32 as original file makes no difference to the rompaq, still refuses to accept the bin file
     
  5. halaween

    halaween MDL Member

    Aug 31, 2007
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    Hi Yen,

    We are here back, hopefully your project of automatic tools for phoenix bios is completed or nearby.

    It is good to start again with COMPAQ bios, and as you know you mod one bios for me that is for HP COMPAQ 6510b, but unfortunately i failed to flash it because of the probelm of the CRC and rom sig.
    the original bios file is here:

    http://h20000.www2.hp.com/bizsuppor...swLang=13&mode=2&taskId=135&swItem=ob-67822-1

    Thank you for your efforts
     
  6. rief

    rief MDL Novice

    Feb 18, 2008
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    Hi Yen,

    Hopefully you are making progress as ADDCC tools do not work for new update in ROMPaq BIOS.

    Please help us.
     
  7. mbuhgakeruh

    mbuhgakeruh MDL Novice

    Jul 27, 2009
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    can anyone show the tutorial how to this on their own?
    with picture will be perfect.
     
  8. sebus

    sebus MDL Guru

    Jul 23, 2008
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    ADDCC was only to be used when enabling different wifi cards.
    The changes usually were 4 or so bytes & somehow the routine was able to correct the crc/checksum using 8 selected bytes
    I can say from testing that when changing the slic from 2.0 to 2.1 same routine is not able to correct the crc

    In fact I do not even understand what the ADDCC was using for calculating additiv checksum (it certainly is NOT checksum32 or CRC32)

    I can manually correct checksum32, but rompaq refuses to accept the file, so I think it is CRC that is being checked

    sebus
     
  9. sebus

    sebus MDL Guru

    Jul 23, 2008
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    Sure, when we learn how to do it.....
     
  10. ckv

    ckv MDL Novice

    Sep 15, 2008
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    Is a bios with SLIC2.1, for a HP 6710b Laptop possible? - And where?
     
  11. jiriteach

    jiriteach MDL Novice

    Jul 30, 2009
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    I am exactly in the same boat. I managed to get my BIOS modded to SLIC 2.1 but I can't find a way to load it now!

    HPQFlash complains about the check!

    I tryed the modded HPQFlash in ADDCC and that fails saying the specified driver cannot be found.

    Any other ideas?
     
  12. Yen

    Yen Admin
    Staff Member

    May 6, 2007
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    We need to correct the checksums. It's not dangerous to play with, since the flashtool refuses to flash if it's not right. To add the sum to unused area should be safe, we need to play like we needed at Dell before...I'll have a look at it again when I have the time therefore. Any new info about the sums would be great!

    I've managed to make the sums equal to the original according to checksum checker provided at first page, but it didn't do the trick!
     
  13. jiriteach

    jiriteach MDL Novice

    Jul 30, 2009
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    I can send you my moddd BIOS if that helps? I have the original and the moddd SLIC 2.1. Let me know.
     
  14. halaween

    halaween MDL Member

    Aug 31, 2007
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    Hi Yen,

    If you remember we came to a point that somebody has to dismantle the rompaq.exe to find which routine it is using on checking the BIOS.BIN file.

    Unfortunately i have no knowledge and experience to do that
     
  15. Yen

    Yen Admin
    Staff Member

    May 6, 2007
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    Yes. me too. Andy hasn't replied yet, I guess he is very busy with this tool.

    @all
    Yes please upload a bios to play with sums, they are quickly to test. Either it flashes or not!
     
  16. wuhoatu

    wuhoatu MDL Member

    Apr 24, 2009
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    One more matter with HP Laptop (Free DOS series such as some 6530s), HP 6530s latest BIOS (F.0F date 24JUN2009) contain itself SLIC 2.1 but after phlashed, HP 6530s Free-DOS still have no SLIC Table. Is there any tool to unlock it before phlash??? With DELL, we can use DELL Service Tag reset tool do unlock.
     
  17. jiriteach

    jiriteach MDL Novice

    Jul 30, 2009
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  18. andmail

    andmail MDL Junior Member

    May 11, 2008
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    Thanks, man!
    Now I have the same problem as you (I mean how to load this BIOS).

    P.S.
    Where are you get the modded BIOS with SLIC 2.1 for 8710w/8710p?
     
  19. jiriteach

    jiriteach MDL Novice

    Jul 30, 2009
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    Yup! Still looking for a way. I'm sure there will be one very soon :)

    I got the modded BIOS with SLIC 2.1 from a mate. He did a bundle of others for me as well which all work well.

    The others work since I can use WinFlash. It's just these specific models!
     
  20. navino87

    navino87 MDL Novice

    Aug 8, 2009
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    Can some one help me modding HP COMPAQ 6510b bios???

    Bios