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How to Flash - Motherboard BIOS

Please be aware that by downloading this BIOS package you agree that in the event of a BIOS flash failure, you must contact your dealer for a replacement BIOS.  There are no exceptions to this policy.  TYAN does not have a policy of replacing BIOS chips directly with end users.  Flashing a BIOS should only be attempted by a qualified technician.  BIOS updates are provided for evaluation purposes only.  All BIOS revisions are released on an "as-is" basis only.

What you should know before you flash the BIOS
TYAN makes no warranties to the usability of a BIOS on our website and are made available to the public on an "as-is" basis.  Upgrading a BIOS without knowing the implications may cause serious adverse affects.  Please do not upgrade a BIOS unless directed to do so by a qualified support technician.  TYAN is not able to replace mis-used or damaged BIOS chips in the event of a BIOS flash failure.  Please contact your dealer for replacements or warranty service. 

TYAN uses different BIOS vendors for its motherboards.  We use Award, AMI and Phoenix core BIOS.  The Award BIOS uses a .bin file extension while the AMI and Phoenix BIOS use a .rom extension.  If you BIOS ends in an .exe or .zip then you need to unzip the file into its primary parts of:  BIOS file, flash utility, .txt file and batch file.

How to Flash the BIOS
Basic Definitions:

    • Boot Disk - Refers to either a Windows 95 or Windows 98 boot disk. Any other
      type of boot disk might load memory resident programs which  will interfere with the
      flash process. Make sure you hit the F5 key when the boot disk starts running to
      insure no other programs  are loaded in the back ground without your knowledge.
    • Utility - Refers to the flash program that is required to get the BIOS file 
      programmed into the motherboards' BIOS chip. For more details   regarding what
      BIOS utility, please go:
    • File to program - Refers to the actual bios file that is downloaded from the
      website. You must always run a winzip program on the downloaded file to insure
      that it is in the appropriate .rom or .bin format before flashing the BIOS.
    • Hard boot - This refers to turning off the system's power and turning it back on.

FDD Batch File Flash Method (For older Archived products w/FDD port):

Two separate diskettes are needed. The first diskette is the Windows 95/98 Boot Disk. The second diskette should contain the flash utility and the unzipped package (batch file, .txt file, flash utility and bios file) on the second diskette. Procedure:

  1.     1. Download the zipped files from the Tyan website. Unzip the package to the 4
  2.          component files (batch file, .txt file, flash utility and bios file) and place them on a
  3.          second diskette. Hard boot the system using the boot disk. Make sure that you hit
  4.          the F5 key when the boot disk first  starts running to make sure no other programs
  5.          are loaded in the background without your knowledge. 
        2. You will come to an A: prompt, simply type in flash and the rest will be handled by
  6.          the batch files included in the downloaded zip file.
        3. Clear the CMOS. Reboot system and the flashed version of the BIOS should now be
  7.           present on your monitor.

USB Flash Key Method:

The Motherboard BIOS must be able to boot to a USB bootable device. Not all core bios versions have USB as a bootable option. Double check your documentation if you are unsure if this option is supported.

   1. Make the USB Flash key bootable. Insure that you have the, IO.sys 
       and MSDOS.sys files on the USB key so that it will be bootable. 
   2. Place the unzipped batch files (batch file, flash utility, bios file and .txt file) on the 
       USB key.
   3. Make sure that the USB Flash Key is at the top of the boot order in your bios so
       that when the motherboard is turned on it will immediately boot to the USB Flash
       Key and boot cleanly to an A: prompt.
   4. Simply type in flash at the A: prompt and the rest will be handled by the batch file 
   5. Clear the CMOS. Reboot system and the flashed version of the BIOS should now be
       present on your monitor.