Service Manual

Figure 1. DOS BIOS Update Screen

Updating the Dell BIOS in Linux and Ubuntu

environments

If you want to update the system BIOS in a Linux environment such as Ubuntu, see https://www.dell.com/support/article/sln171755/.

Flashing the BIOS from the F12 One-Time boot

Update your computer BIOS using the BIOS update.exe file that is copied to a FAT32 USB drive 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 drive or you can also update the BIOS from the F12 One-Time boot

menu on the computer.

Most of the Dell computers built after 2012 have this capability, and you can confirm by booting your computer to the F12 One-Time Boot

Menu to see if BIOS FLASH UPDATE is listed as a boot option for your computer. If the option is listed, then the BIOS supports this BIOS

update option.

NOTE: Only computers 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 the following:

• USB drive 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 drive

• AC power adapter that is connected to the computer

• Functional computer battery to flash the BIOS

Perform the following steps to perform the BIOS update flash process from the F12 menu:

CAUTION:

Do not turn off the computer during the BIOS update process. The computer may not boot if you turn off

your computer.

68 System setup