Sony Vaio SA/SB/SC/SE Advanced Menu BIOS Hack

Discussion in 'VAIO / Sony' started by pyr0, Jan 28, 2012.

  1. kruegsch

    kruegsch Notebook Enthusiast

    Reputations:
    44
    Messages:
    36
    Likes Received:
    0
    Trophy Points:
    15
    Indeed - Let's do it!
     
  2. m.susc

    m.susc Notebook Guru

    Reputations:
    5
    Messages:
    64
    Likes Received:
    1
    Trophy Points:
    16
    Wow! that's great!! :)
    Are you open to test some of the risky BIOS settings, for the benefit of us mortals following this thread?
     
  3. Crotia

    Crotia Notebook Consultant

    Reputations:
    11
    Messages:
    225
    Likes Received:
    2
    Trophy Points:
    31
    Good luck! Please report back. Maybe Camilo can help you with some custom bioses
     
  4. kruegsch

    kruegsch Notebook Enthusiast

    Reputations:
    44
    Messages:
    36
    Likes Received:
    0
    Trophy Points:
    15
    Had a lack of time so far ... Only tried to set the RAM frequency to 1600 MHz. It resulted in default 1333 MHz (checked with CPU-Z).

    Following settings will brick your BIOS:

    * disable Intel GPU
    * set first GPU to PEG
     
  5. darxide_sorcerer

    darxide_sorcerer Notebook Deity

    Reputations:
    716
    Messages:
    1,347
    Likes Received:
    2
    Trophy Points:
    56
    great to know. please keep posting your findings here. :)
     
  6. Naji79

    Naji79 Newbie

    Reputations:
    0
    Messages:
    1
    Likes Received:
    0
    Trophy Points:
    5
    i think this is too late for me to read that becuase this is just what happing to me right now
    at least they should put "Warning don't disable the intel graphic card" before we download and update the bios
     
  7. kruegsch

    kruegsch Notebook Enthusiast

    Reputations:
    44
    Messages:
    36
    Likes Received:
    0
    Trophy Points:
    15
    I'm sorry for you Naji!

    Yeah, Pyr0 should add a warning to the first post. Yesterday I thought about Intel Management Engine and if you can access it with a bricked BIOS.
     
  8. pyr0

    pyr0 100% laptop dynamite

    Reputations:
    829
    Messages:
    1,272
    Likes Received:
    36
    Trophy Points:
    56
    First post updated. I will see if I can remove the dangerous options from future BIOS upgrades. First I will start working on SATA3 in a few days.
     
  9. m.susc

    m.susc Notebook Guru

    Reputations:
    5
    Messages:
    64
    Likes Received:
    1
    Trophy Points:
    16
    I don't mean to abuse your time, but it'd be great to test if enabling the following settings will prevent the PEG bug (this is, that selecting PEG won't brick your machine):


    • Video config --> PCI Eexpress graphic --> PEG Workaround [default: Disabled]
    • PCI Express configuration --> PCIe-USB Glitch W/A [default: Disabled]

    Another setting that intrigues me is the following:


    • Chipset configuration --> ME FW Image Re-Flash [default: Disabled]

    Is the above something that allows re-flashing your BIOS/settings automatically, maybe from an USB stick, to eventually recover a bricked machine without the need to open the hatch and touch the hardware??

    And finally, will the following change to 24-bit improve the screen quality?:


    • Video config --> Internal graphic device --> Panel control depth [default: 18 bit]

    So... it's great to have all this settings at dispose. Unfortunately the lack of documentation on each setting makes it all too risky. Fortunately some unofficial documentation will emerge from this thread...

    @pyro: does your hacked firmware keep all default settings of the official release? I mean, after a fresh-flashing of your version, am I changing some other setting besides enabing the Advanced menu?

    Thank you both for the good efforts!
     
  10. kruegsch

    kruegsch Notebook Enthusiast

    Reputations:
    44
    Messages:
    36
    Likes Received:
    0
    Trophy Points:
    15
    Video config --> PCI Express graphic --> PEG Workaround
    (PEG Workaround for some CRB,enable will increase delay time to make sure PEG can display)
    A bit more time ... we'll see.
    EDIT: fail

    PCI Express configuration --> PCIe-USB Glitch W/A Disabled]
    (PCIe-USB Glitch W/A for bad USB device(s) connected behind PCIE/PEG Port)
    I guess that USB devices don't interfere with the GPU init.
    EDIT: fail

    Video config --> Internal graphic device --> Panel control depth
    That is a save setting! Check it by yourself.

    Chipset configuration --> ME FW Image Re-Flash
    ME means Intel Management Engine. I guess that prevents user to flash a configured system, because different ME versions seems not to be fully compatible.
    BTW - You can disable the ME, but that will cause the fan to run at 100%.

    I compared the original BIOS and Pyr0's. He changed twice the Op-Code 0x27 to 0x28 and adjusted the checksum. Means that only the advanced menu got unlocked.
     
Loading...

Share This Page