Set up a boot floppy.
Copy the flash utility and the bios file to it. I always download two copies of the bios file and check one against the other to be sure I got a good download.
http://www.karenware.com has a couple of good utilities for checking files using the MD5 hash or other hashing protocols. If you choose to use the karenware utils, be sure you have the Visual BASIC driver installed first (before attempting to install or use any other of her utils) - you can DL it from Karen's site as well.
Create an autoexec.bat file to run the flash command line.
Usually a command like awardfl (or whatever name your flashing utility goes by) /? will give you the command line syntax.
The autoexec.bat file for a typical boot flash would have a line like this:
awdflash bios.bin oldbios.bin /py/sn/wb/cd/cc/cp/R
where
bios.bin=the name of the new flash data file (should never be more than 8.3 characters)
oldbios.bin=the name to use if saving the current bios to a file (use only if the current bios works)
py=Flash the BIOS
/sn=don't save a copy of the current bios (don't use this if the current bios works - use /sy instead)
/sb=skip flashing the boot block - use this initially as it is the boot block that allows the boot flash process to work at all. If the boot flash attempt fails, then probably the boot block is also corrupt and you will have to use other means to get your BIOS flashed. If the BIOS chip isn't removable (socketed) it is likely you'll have to send it off to Twinhead. Check with DJMix first to see if he can do anything like that.
. If the boot flash attempt appears to have succeeded but the BIOS isn't the right one, then on the next boot flash attempt you can use /wb instead of /sb, to write the boot block as well if you want. But maybe it would be safer to continue to use the current boot block code until you have the proper bios installed.
/cd=clear DMI data after flash
/cc=clear CMOS ram after flash
/cp=clear ESCD data after flash
/R=reset computer after flash
The syntax for your flash utility should be similar.
Once you have the proper bios installed, run the flash again with /wb - then run it again with /wb. This will insure that the BIOS and boot-block code is in there solidly.
.bh.
p.s. You also want to check your computer mfr's web site for specific instructions on what to do in case of a failed flash attempt. Any good mfr. will have such instructions.bh.