You can run the BIOS flash update file from Windows using a bootable USB drive or you can also update the BIOS from the One-Time boot menu on the computer. To update your computers BIOS, copy the BIOS XXXX.exe file onto a USB drive formatted with the FAT32 file system. Then, restart your computer and boot from the USB drive using the One-Time Boot Menu.
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BIOS Update
To confirm if the BIOS Flash Update is listed as a boot option you can boot your computer to the
One Time Boot Menu. If the option is listed, then the BIOS can be updated using this method.
To update your BIOS from the One-Time boot menu, you need the following:
USB drive formatted to the FAT32 file system (the drive does not have to be bootable)
BIOS executable file that you downloaded from the Dell Support website and copied to the root of the USB drive
AC power adapter must be connected to the computer
A functional computer battery to flash the BIOS
Perform the following steps to update the BIOS from the One-Time boot menu:
CAUTION:Do not turn off the computer during the BIOS flash update process. The computer may not boot if you turn off your computer.
Steps
Turn off the computer, insert the USB drive that contains the BIOS flash update file.
Turn on the computer and press
F12 to access the
One Time Boot Menu. Select
BIOS Update using the mouse or arrow keys then press Enter.
The flash BIOS menu is displayed.
Click
Flash from file.
Select the external USB device.
Select the file and double-click the flash target file, and then click
Submit.
Click
Update BIOS. The computer restarts to flash the BIOS.
The computer will restart after the BIOS flash update is completed.
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