boot block checksum not valid

Discussion in 'BIOS Mods' started by nukkelhet, Oct 25, 2009.

  1. nukkelhet

    nukkelhet MDL Novice

    Aug 22, 2009
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    #1 nukkelhet, Oct 25, 2009
    Last edited: Nov 1, 2009
    Concerns an error message '' boot block checksum not valid "when using AMI tool v1.40 to mod an ASUS a6va bios

    is solved already!
     
  2. HenriM

    HenriM MDL Novice

    Jul 30, 2009
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    #2 HenriM, Nov 1, 2009
    How did you solve this issue? I have the same issue with an 'old' Asus Notebook (M6847NE) notebook.
     
  3. ESC 1000

    ESC 1000 Guest

    #3 ESC 1000, Nov 1, 2009
    Last edited by a moderator: Apr 29, 2017
  4. nukkelhet

    nukkelhet MDL Novice

    Aug 22, 2009
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    #4 nukkelhet, Nov 1, 2009 (OP)
    I found an already modded 2.1 bios ,so there was no need to continue trying.:)
    Later on I noticed in somewhere else(?) that the errors are quite common and that a setting ''ignore checksum and module 80h warnings'' in the advanced page of the program must be checked.
    I''ve tried it that way and it worked.
    However I was not in the mood to try it out and reflash taking the risk just for educational purposes.
    Hope this helps you!
     
  5. HenriM

    HenriM MDL Novice

    Jul 30, 2009
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    #5 HenriM, Nov 1, 2009
    Thanks for taking the time to explain!
     
  6. ESC 1000

    ESC 1000 Guest

    #6 ESC 1000, Nov 1, 2009
    sorry, but this not work for Asus Notebook A7V Series
     
  7. HenriM

    HenriM MDL Novice

    Jul 30, 2009
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    #7 HenriM, Nov 1, 2009
    It also didn't solve my issue. The AmiTool indeed continues, I can flash the BIOS, but when I startup the notebook with this, Windows 7 will immediately stop starting (also freshly installing Windows 7 will fail with this BIOS).

    For the time being I use now the Loader, but I feel more happy with a 'SLIC 2.1' BIOS. Anyone has any suggestion?
     
  8. NoJuan999

    NoJuan999 Experienced SLIC Tool Operator

    Jul 31, 2009
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    #8 NoJuan999, Nov 1, 2009
    Last edited by a moderator: Apr 29, 2017
  9. HenriM

    HenriM MDL Novice

    Jul 30, 2009
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    #9 HenriM, Nov 3, 2009
    @NoJuan999 On this pointer the AFLASH2 is not downloadable. I tried with the latest AFLASH2 version I could find and flashed with /all option. Unfortunately to no avail. I get the same described behaviour as before. Do I really need 'your' particular AFLASH2 version. If yes, can you make it available somewhere?

    FYI: I now have AFLASH2.EXE 96,190 bytes 4-17-07 15:08:16
     
  10. NoJuan999

    NoJuan999 Experienced SLIC Tool Operator

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    #10 NoJuan999, Nov 3, 2009
    Last edited: Nov 3, 2009
  11. HenriM

    HenriM MDL Novice

    Jul 30, 2009
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    #11 HenriM, Nov 3, 2009
    I performed a byte to byte hex-compare of the 2 versions of the AFLASH2.EXE file and these are 100% identical.

    I also found a 0209AE.M6N BIOS file with a supposed added SLIC2.1 (DELL), but also this one is not working and giving the exact same results.

    It seems really hard to 'hack' the BIOS of these 'old' ASUS notebook Series (in my case M6NE).
     
  12. NoJuan999

    NoJuan999 Experienced SLIC Tool Operator

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    #12 NoJuan999, Nov 3, 2009
    Last edited by a moderator: Apr 29, 2017
  13. HenriM

    HenriM MDL Novice

    Jul 30, 2009
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    #13 HenriM, Nov 3, 2009
    Thanks for keeping assisting NoJuan999!

    This is indeed a complete different board, so I will not try this one. Tomorrow I will try with other methods (SSV, etc.) for modifying the original BIOS and check if this helps (ignoring checksum). I keep you updated on the progress.
     
  14. HenriM

    HenriM MDL Novice

    Jul 30, 2009
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    #14 HenriM, Nov 11, 2009
    I didn't try other methods yet. Currently I use a bootloader. In case I do have the time/courage :) to try with other methods I will place an update in this thread...
     
  15. phrunt

    phrunt MDL Addicted

    May 1, 2007
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    #15 phrunt, Nov 11, 2009
    SSV is more risky and can cause a brick so only use it if you know how to recover your bios, there is a good chance it will work but just incase