Do BIOSu jest dołączona taka procedura (jedna z kilku):

AMI BIOS Flash Procedure
1. Know your model number
a. Open your case and look for the MS-XXXX number on the motherboard
between the PCI slots, also check the version number that is written
there as well. (some motherboards are named like P45 Diamond, make sure
you have the right version number)
b. Boot up your system & take a look at the top left screen during POST,
you should see something like "A7516IMS V1.4 082708" This means the
board is MS-7516 with BIOS version 1.4
Hint: Many systems are clearing this message very fast, the bios version
is then unreadable, and you can either press "PAUSE" or disable the
"Quick Boot" in the BIOS setup.


2. Download the BIOS that matches your motherboard AND version number
(some motherboards are named like P45 Diamond, make sure you have the
right version number). BIOS can be found according to the CPU type of
your board like if your CPU is Intel 775 type then look here
http://global.msi.com.tw/index.php?func=prodpage2&ma
incat_no=1&cat2_no=170

3. Extract the BIOS-archive that you have downloaded by double clicking
to c:\test

4. Boot your system from a Win98 or WinME boot-floppy.
How to make boot floppy in case your don't have it ready:
For Win9X, You can type [C:\ format a:/s] from the DOS prompt.
For WinME, You can make a boot floppy from control panel--> add/remove
program-->make boot floppy. Remove autoexec.bat & config.sys file if
there's any.
For Win2000, there's no way to make boot floppy, so you have to either
use Win9X or WinME boot floppy.
For WinXP, you can make a DOS boot disk. Go to Your Computer, right
click drive A:, select Format, select copy system files.

5. When you get the A:\ prompt, type the following sequence:
C: <enter>
cd\test <enter>
C:\test> afud4234 BIOS file
(to save or not to save old BIOS is the user's decision)

6. Reboot your system when prompted

Flashing the BIOS for Non-FAT file system
1. Know your model number
a. Open your case and look for the MS-XXXX number on the motherboard
between the PCI slots, also check the version number that is written
there as well. (Some motherboards are named like DKA790GX Platinum; make
sure you have the right version number)

b. Boot up your system & take a look at the top left screen during POST,
you should see something like "A7550AMS V1.2 090508" This means the
board is MS-7550 with BIOS version 1.2
Hint: Many systems are clearing this message very fast, the bios version
is then unreadable, and you can either press "PAUSE" or disable the
"Quick Boot" in the BIOS setup.

2. Download the BIOS that matches your motherboard AND version number
(some motherboards are named like DKA790GX Platinum; make sure you have
the right version number). BIOS can be found according to the CPU type
of your board like if your CPU is AMD AM2+ type then look here
http://global.msi.com.tw/index.php?func=prodpage2&ma
incat_no=1&cat2_no=171

3. Extract the file you have downloaded to a floppy (not the win ME/98
startup floppy) by double clocking the file in windows mode and
supplying the path a:\

4. Boot the computer using windows ME or windows 98 startup disk. It
must be one of these! A plain boot disk will not be good enough.
If you do not have Windows ME or 98 to create the floppy you can make
one on a friend's computer.

5. When boot is done there will be a message on the screen
showing:"Diagnostic tools were successfully loaded to drive" followed by
a single letter.
This letter is the letter assigned to the RAMDRIVE. This RAMDRIVE is a
virtual drive in the system memory and can be accessed and controlled
like any other drive with DOS commands such as:
MD - Make Directory
Copy - copy a file
Delete - Delete a file

There is one important difference which is that being in the system
memory this drive is wiped once the computer is restarted or shut down.

6. Replace the startup floppy with the one containing the flash utility
and bios ROM files previously extracted in windows.

7. Copy the 2 files to the RAMDRIVE by using the DOS command copy.
Here is an example, in this example the flash utility is AFUD4234.EXE
,the ROM file is A7550AMS.120 and the RAMDRIVE letter assignment is D

copy AFUD4234.exe d:\
copy A7550AMS.120 d:\

8. Change the current working directory to the RAMDRIVE root directory,
with the example case of the RAMDRIVE being drive D this is done by
simply done with the command d:

9. Execute the flash utility with the ROM file as a command line
argument, with this example:
afud4234 A7550AMS.120

If you wish to save the current bios you must specify the full path
a:\filename. Specifying only a file name will save the bios to the
RAMDRIVE which will be wiped after restarting the computer and the file
will not be saved.

a:\bios.old is an example of the correct way to save the bios.

10. Reboot your system when prompted

12. If your system doesn't boot after you flashed, please refer to the
BIOS recovery method as described

Reflash BIOS by USB Disk Under DOS Mode Procdure

1. Know your model number
a. Open your case and look for the MS-XXXX number on the motherboard
between the PCI slots, also check the version number that is written
there as well. (Some motherboards are named like P45 Diamond; make sure
you have the right version number)

b. Boot up your system & take a look at the top left screen during POST,
you should see something like "A7516IMS V1.4 082708" This means the
board is MS-7516 with BIOS version 1.4
Hint: Many systems are clearing this message very fast, the bios version
is then unreadable, and you can either press "PAUSE" or disable the
"Quick Boot" in the BIOS setup.

2. Download the BIOS that matches your motherboard AND version number
(some motherboards are named like P45 Diamond; make sure you have the
right version number) to your USB devise. BIOS can be found according to
the CPU type of your board like if your CPU is Intel 775 type then look here
http://global.msi.com.tw/index.php?func=prodpage2&ma
incat_no=1&cat2_no=170

Or if your CPU is AMD AM2+ type then look here
http://global.msi.com.tw/index.php?func=prodpage2&ma
incat_no=1&cat2_no=171

3. Extract the BIOS-archive that you have downloaded by double clicking
to bootable USB device.

4. Boot your system from a USB device

5. When you get the DOS prompt, type the following sequence:
(assuming USB Flash drive uses F:/ (F Prompt)
F:>cd<space> XXXXVXX(document name) <enter>
F:\XXXXVXX>afud4234<space>AXXXXIMS.XXX(bios name) <enter>

6. Reboot your system when prompted


Zupełnie nie wiem, jak się do tego zabrać.