Updating your system BIOS using a USB flash drive
About this task If the system cannot load into Windows but there is still a need to
update the BIOS, download the BIOS file using another system and
save it to a bootable USB Flash Drive.
Steps Download the BIOS update .EXE file to another system. Copy the file e.g. O9010A12.EXE onto the bootable USB Flash drive.
Insert the USB Flash drive into the system that requires the BIOS
update.
Restart the system and press F12 when the Dell Splash logo appears
to display the One Time Boot Menu.
Using arrow keys, select USB Storage Device and click Return.
The system will boot to a Diag C:\> prompt. Run the file by typing the full filename e.g. O9010A12.exe and press
Return. The BIOS Update Utility will load, follow the instructions on
screen.
Figure 1. DOS BIOS Update Screen
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