Dell Vostro 3578 Vostro 15-3578 Owners Manual - Page 68
Flashing the BIOS from the F12 One-Time boot menu
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Table 18. System Logs Option BIOS Events Thermal Events Power Events Description Allows you to view and clear the System Setup (BIOS) POST events. Allows you to view and clear the System Setup (Thermal) POST events. Allows you to view and clear the System Setup (Power) POST events. Table 19. SupportAssist System Resolution Option Auto OS Recovery Threshold Description Allows you to control the automatic boot flow for SupportAssist System. Options are: • Off •1 • 2 (Enabled by default) •3 SupportAssist OS Recovery Allows you to recover the SupportAssist OS Recovery (Disabled by default) Flashing the BIOS from the F12 One-Time boot menu 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. 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 Flash Update using the arrow keys then press Enter. 68 System setup