Manual, BIOS update and so on for that motherboard can be found here:
http://www.pcpartner.com.hk/bios/i440.htm

AMIflash utility can be downloaded here:
http://ftp.gigabyte.com.tw/support/temp/flash855.zip

It's 8.55 version (even newer than I'm using now [Wink] )
May be worth to read some instructions from Gigabyte: http://www.gigabyte.com.tw/support/procedure1.htm

I also e-mailed to You AMIflash ver. 8.53 .
Check Your e-mail box. [Wink]