GA-8IEXP BIOS Flashing procedure

[Unknown]

I have a 2002-vintage Gigabyte GA-8IEXP version 1.2 motherboard, now
using a 2.4GHz Pentium CPU and BIOS version F8. I am hoping to install
a 3.06MHz CPU with HT (hyperthreading) and BIOS version F9, which
supports HT. I have not yet installed the new CPU.

I changed the original F7 BIOS to F8 in 2002 but I do not remember
what procedure I used. I think it was the"Dual BIOS/Q-Flash" utility
from the BIOS Setup.

I have FLASH860.EXE and FLASH864.EXE programs, and 8IEXP.F8 and
8IEXP.F9 BIOS files. I have an eSATA controller board for use with an
external backup drive.

I made a boot diskette, extracted the FLASH864.EXE and 8IEXP.F9 Files
to it, and booted from it. The program lists lists N82802AB firmware
hubs and 28F004BX-T flash memories, and says I have an SST 49LF004A
"module". (It is a firmware hub). I don't know whether to change
anything, so I did not proceed. There is nothing about this that I see
in the Gigabyte manual.

I attempted to use the "Dual BIOS/Q-Flash" utility via the BIOS Setup
but it says the main BIOS and backup BIOS are both protected, and
refuses to change either of them. There is nothing about this that I
see in the Gigabyte manual. How can I get around it?