Optiplex 9020 MT unable to complete BIOS update

Hi All,

I bought an used Optiplex 9020MT with BIOS version A03.

I run the update file from Windows 7 Pro but it is not updated.

Then I try to run the update file from F12 menu (from boot), also running normal but BIOS not updated.

Finally I boot with DOS, run the BIOS update file and done. But BIOS is remain the same, not updated.

Try to reset the BIOS from RTCRST pin, took off the CR2032 battery and unplug the power cable, no success.

Unplug the power cable then press CTRL-ESC while plugging the power cable again, there is not fail BIOS update menu come up.

So what exactly the problem with this 9020 MT ?

I have some Optiplex and doing BIOS update is as smooth as silk, but not with this one !

Hope there is anyway to get this unit BIOS updated because the LAN port has problem that I need to re-install the LAN driver in order to get it work. If not then the LAN status is unable to connect to network.

Regards,

Hendra