Updating your system BIOS using a BIOS update .exe file copied to a
FAT32 USB key and booting from the F12 one time boot menu.
BIOS Update
You can run the BIOS update file from
Windows using a bootable USB key or you
can also update the BIOS from the F12 One-Time boot menu on the system.
Most Dell systems built after 2012 have this capability and you can
confirm by booting your system to the F12 One-Time Boot Menu to see
if
BIOS FLASH UPDATE
is listed as a boot option for your
system. If the option is listed, then the BIOS supports this BIOS
update option.
NOTE: Only systems with
BIOS Flash Update
option in the F12
One-Time Boot Menu can use this function.
Updating from the One-Time Boot Menu
To update your BIOS from the F12 One-Time boot menu, you will need:
USB key formatted to the FAT32 file system (key
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 key
AC
power adapter connected to the system
Functional system battery
to flash the BIOS
Perform the following steps to execute the BIOS update flash process from
the F12 menu:
CAUTION: Do not power off the system during the BIOS update process.
Powering off the system could make the system fail to boot.
From a power off state, insert the USB key where you copied the
flash into a USB port of the system
.
Power on the system and press the F12 key to access the One-Time
Boot Menu, Highlight BIOS Flash Update using the arrow keys then
press Enter.
The Bios flash menu will open then click the browse button.
The E5450A14.exe file is shown as an example in the following screenshot. The actual file name may vary.
Once the file is selected, it will show in the file selection box and
you can click the OK button to continue.
Click the Begin Flash Update button.
A warning box is displayed asking you if you want to proceed. Click
the Yes button to begin the flash.
At this point the BIOS flash will execute, the system will reboot
and then the BIOS flash will start and a progress bar will show the
progress of the flash. Depending on the changes included in the
update, the progress bar may go from zero to 100 multiple times and
the flash process could take as long as 10 minutes. Generally this
process takes two to three minutes.
Once complete, the system will reboot and the BIOS update process
is completed.
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