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    Is it possible now to edit the bios ?

    Discussion in 'Gateway and eMachines' started by k4b4l74, Dec 8, 2009.

  1. k4b4l74

    k4b4l74 Notebook Geek

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    Ok, with the godzilla 94.28 (old bios for p 7811fx), i'm able to open the bios in the phoenix bios editor (not the 9C 12 or 17)

    Now the question is:

    do you know if it possible to modify something for overclocking ? (change UPDATE0.ROM under CPUUpdate or ACPI tables ?)

    http://img198.imageshack.us/img198/9011/biospm.jpg
     
    k4b4l74, Dec 8, 2009
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  2. llynx

    llynx Notebook Consultant

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    As far as I know, you can't do anything ;[ stupid phoenix
    TME is a hardware lock but as far as I know it IS set by the bios, so hopefully there is something that can be done. (Correct me if I'm wrong)
     
    llynx, Dec 8, 2009
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  3. moral hazard

    moral hazard Notebook Nobel Laureate

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    moral hazard, Dec 8, 2009
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  4. llynx

    llynx Notebook Consultant

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    Most people like softmods, not hardmods. A bios mod would be nicer
     
    llynx, Dec 8, 2009
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  5. moral hazard

    moral hazard Notebook Nobel Laureate

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    I wish I could mod my toshiba BIOS, but it comes in a *.com file.

    Personally I think a hardmod is safer than a BIOS mod. My BIOS chip is soldered to the motherboard, so if I make a bad flash then it would mean trouble. Although it would probably be possible to try a blind flash to save it.

    The PLL pin mod is not too bad. I see more successful pin mods than BIOS mods.
     
    moral hazard, Dec 8, 2009
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  6. ImportJunky

    ImportJunky Notebook Consultant

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    obvisously, but right now the only thing that can be done is a PLL mod. or buy a new machine. I opted for the later.
     
    ImportJunky, Dec 8, 2009
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  7. llynx

    llynx Notebook Consultant

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    How does TME work exactly? When it says it is sampled on power up? Does that mean if we could find where in the bios gateway sets register 9 bit 6 (TME) to 1, we could change it to 0 theoretically no?
     
    llynx, Dec 14, 2009
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  8. k4b4l74

    k4b4l74 Notebook Geek

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    I do this lynx (updating with 0 instead of 1) on bit 10 (or 9) at 6.

    When i click on UPDATE or APPLY, the Computer Freezes.

    I try to force CrystalCPUId to change my multiplier on x12 instead of x11.5 (on my X9100). Same result, the computer Freezes.

    So PLL mode is the only way to overclock imo
     
    k4b4l74, Dec 14, 2009
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  9. k4b4l74

    k4b4l74 Notebook Geek

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    ANother thing. I can not edit my current bios (or any 9C XX) with Phoenix bios editor.

    If someone knows how to extract from IVMxx.exe our bios. It will be great
     
    k4b4l74, Dec 14, 2009
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  10. moral hazard

    moral hazard Notebook Nobel Laureate

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    try using 7-zip on the exe file.
     
    moral hazard, Dec 14, 2009
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  11. k4b4l74

    k4b4l74 Notebook Geek

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    do not work.

    Anyway i've received a .wph or .rom from 9C .17 but the PBE do not want to open it "No BCP(BPE or BCE) found"
     
    k4b4l74, Dec 14, 2009
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  12. User Retired 2

    User Retired 2 Notebook Nobel Laureate NBR Reviewer

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    The TME pin is set by circuit logic. Needs a pinmod to undo or, in the case of the ics9lprs355 in my 2510P, some fancy footwork by setfsb to overcome. Can study the before/after registers screenshot and the datasheet to try to reverse engineer it if you have an ICS9xxxxx PLL.
     
    User Retired 2, Dec 14, 2009
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  13. k4b4l74

    k4b4l74 Notebook Geek

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    The PLL of P78xx is ICS 9LPRS365BKL
     
    k4b4l74, Dec 14, 2009
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  14. k4b4l74

    k4b4l74 Notebook Geek

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    What do you do to successfull overclock without a pinmod nando4 ?
     
    k4b4l74, Dec 14, 2009
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  15. k4b4l74

    k4b4l74 Notebook Geek

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    Hehe i see that someone (FieroGT with the help of Moral Hasard and nando4) on the forum successfully disabled the TME of 9LPRS365BKL with just adding a 10k resistor coming from pin11 to GND without cutting the original track of pin11.

    I will do this in 15 days (in holidays) stay tuned ;)
     
    k4b4l74, Dec 14, 2009
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  16. moral hazard

    moral hazard Notebook Nobel Laureate

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    moral hazard, Dec 14, 2009
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  17. banjo

    banjo Notebook Geek

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    You can find the extracted bios by googling. You need PBE 2.2.18 to open it.(Not the demo) Also on google. Once you open it- use explorer and go to Programs(x86)-Phoenix-Bios-temp folder. there you will find the complete bios break-down part by part. Use a hex editor of your chioce to open any of the different files.

    Of course it is in hex + text format. But I did notice some mention of TME being set to various pins .( I believe if I remember correctly, pin 23 plus a couple of others) But, it is beyond me on how to change or mess with it. I would think you would have to match the correct acpi table up with the correct pin for it to work. Don't know but I would think it would be easy to "brick" your laptop with doing a bios mod.LOL.
     
    banjo, Dec 14, 2009
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  18. k4b4l74

    k4b4l74 Notebook Geek

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    Can you give to me the 9C 17 bios that PBE can open ?
    I will try tonight to check the ACPI tables.
     
    k4b4l74, Dec 14, 2009
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  19. banjo

    banjo Notebook Geek

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    What's your e-mail?
     
    banjo, Dec 14, 2009
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  20. llynx

    llynx Notebook Consultant

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    Yeah, I'm beginning to see that modding the bios is a far more complex and dangerous process than simply grounding a wire....

    Is it possible to see the pll without taking apart the whole chassis?
     
    llynx, Dec 14, 2009
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  21. k4b4l74

    k4b4l74 Notebook Geek

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    I have PBE 2.2.1 (so the last) and a copy of a 9c 17 bios of someone.
    DO not want to open.

    Btw, pin mod seems less dangerous than flashing bios
     
    k4b4l74, Dec 14, 2009
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  22. banjo

    banjo Notebook Geek

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    Yeah,
    Unless you are really familiar with coding and bios "hacking" I would think a hardware solution might be better. I'm just trying to learn about bios modding myself. Hopefully, I'll run across someone really experienced that will help mod it. I firmly believe it is in there (the bios) and maybe able to mod it so a quad can run on the P78xx series, and unlock the mulitplier for the Xtreme cpu's.
     
    banjo, Dec 14, 2009
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  23. k4b4l74

    k4b4l74 Notebook Geek

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    If you can do this (unlocl multiplier for Xtreme CPU), you will be the master of everyone :D
     
    k4b4l74, Dec 15, 2009
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