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Recently purchased a Tomcat K8E (S2865) motherboard from Newegg; it
came with BIOS version 1.00, and I needed to flash it to a newer version
in order to activate Cool n Quiet, and take full advantage of the ECC
RAM installed.

I tried a direct flash from 1.00 to 2.01, and, it didn't work. Flash
routine would hang, and not finish.

So, I tried flashing the three updated BIOS versions sequentially, and
this worked fine.

1.00 to 1.01, to 2.00, to 2.01.

Notes: buried in the documentation in the Tyan website is the
suggestion to unplug any USB devices during the BIOS flash.

Flash program is apparently touchy about having any TSR programs loaded
along with DOS, so I made a Win98 boot floppy, then erased all files on
it except for

COMMAND.COM
MSDOS.SYS

and
IO.SYS

Also, clearing the CMOS after every BIOS flash also helps--not sure why,
but completely unplugging the power supply, then leaving the "Clear
CMOS" jumper in the 'clear' position for about 5-10 minutes is required
to fully clear the CMOS settings.

Overall, a great motherboard...very stable, solidly built, I expect it
will last a long time.

Link to BIOS upgrade page:

http://www.tyan.com/support/html/b_s2865.html