Dell Inspiron 14 5408 Service Manual page 80

• 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
1. From a power off state, insert the USB key where you copied the flash into a USB port of the system .
2. 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.
3. The flash BIOS menu will open, and then click the Flash from file.
4. Select external USB device.
80 System setup