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.
About this task
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.
Steps
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 Update using the mouse or arrow keys then press
Enter.
The flash BIOS menu will open, and then click the
Flash from file.
Select external USB device.
Once the file is selected, Double click the flash target file, then press submit.
Click the
Update BIOS then system will reboot to flash the BIOS.
Once complete, the system will reboot and the BIOS update process is completed.
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