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 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 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 that is connected to the system.
Functional system battery to flash the BIOS.
Perform the following steps to run 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.
Select
BIOS Update
using the mouse or arrow keys then press
Enter.
The
Flash BIOS
opens.
Click
Flash from file.
Select external USB device.
Once the file is selected, double-click the flash target file and click
Submit.
Click
Update BIOS for the system to reboot and flash the BIOS.
Once complete, the system reboots and the BIOS update process is completed.
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