UEFI Bios Tools and guide

Discussion in 'BIOS Mods' started by amirb, Dec 1, 2011.

  1. amirb

    amirb MDL Novice

    Jul 7, 2010
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    Hello

    Where can i find tools and guide for modding an UEFI Bios ?

    thanks

    Amir
     
  2. qtm

    qtm MDL Addicted

    Jul 8, 2009
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  3. amirb

    amirb MDL Novice

    Jul 7, 2010
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    Not EFI but UEFI

    Thank U QTM.

    I am talking about UEFI Bios like Lenovo T420.
    Phoenix tool gave me other files then what I am usual to (bioscod0*).
    I dont know what files to take for processing with PHNXPatch, and if it will work at all.
    Please advise.
    Thanks
    Amir
     
  4. Yen

    Yen Admin
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    May 6, 2007
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    Stop hovering to collapse... Click to collapse... Hover to expand... Click to expand...
  5. qtm

    qtm MDL Addicted

    Jul 8, 2009
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    r your machine is T420 ?and u need remove whitelist,
    if yes,look here
    http://forums.mydigitallife.net/thr...-mod-requests.?p=513720&viewfull=1#post513720

    if u machine is dos machine need slic2.1 ,upload your machine back up bios,i can enable slic to be preinstalled windows machine(TO sendspace.com)

    http://forums.mydigitallife.net/threads/9856-Universal-BIOS-Backup-Toolkit
     
  6. amirb

    amirb MDL Novice

    Jul 7, 2010
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    Thanks a lot QTM

    I have already downloaded a good Mod for T420.
    Now I am trying to get a Moded Bios for Lenovo X220 without succes,
    because many Moded Bioses download links are becoming unavailable.
    This is why I want to learn to do it by myself like I did with older notebook models (That has no UEFI Bios).
    I am looking for a guide that explains how to Mod UEFI Bioses.
    Thanks
    Amir
     
  7. Yen

    Yen Admin
    Staff Member

    May 6, 2007
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    You can learn like this.
    Download a already modified UEFI and the original. Decompose both using andy's tool. Then compare the modules of both dump folders to find the changes.
    The changed module you can disassemble using IDA to get what code has changed.
    Then apply the same at an updated UEFI for instance.

    There is no general guide but this advice. To disable whitelist you need to find the code that checks it. The way is different how to achieve that, hence there are no general instructions.
    Difficult is to find the code that checks the whitelist.
     
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  8. qtm

    qtm MDL Addicted

    Jul 8, 2009
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    x220
    http://forums.mydigitallife.net/thr...-mod-requests.?p=514959&viewfull=1#post514959

     
  9. amirb

    amirb MDL Novice

    Jul 7, 2010
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    Thank U very much QTM.
    Amir
     
  10. jeff2012

    jeff2012 MDL Member

    Mar 31, 2010
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    Is this true ..grabbed from another forum

    "As for UEFI BIOS, to my knowledge it is not possible right at present to insert a slic table due to digital signature"

    Thanks
     
  11. Flipp3r

    Flipp3r MDL Expert

    Feb 11, 2009
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    Yen, what if I want to change some of the bios defaults? For example, make AHCI the default instead of IDE?
     
  12. jujuguy

    jujuguy MDL Novice

    May 14, 2012
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    Stasio please breakdown info for the link you provided.


    Hi have gone to link but dont understand is there a lamans explanation on this or something or a step buy step guide on modding UEFI bioses to add slic 2.1 tables.

    in the past i only used Ami and Pheonix tools to bios mod and it allways woeked and now i have upgraded PC for little Bro but cant add slic using these tools to a asrock fm2a75m-pro4 motherboard bios revision 2.10 i see it can be done with bios revision 1.80 of the same board so am using old bios rivision on board but when i do it with pheonix tools it says it has added slick but when go to flash with moded bios 2.10 through motherboard bios utiliy it does not work whyo_O.