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Dell Precision 7920 Tower Owner's Manual

Updating the BIOS from the One Time Boot menu

Update your computer BIOS using the BIOS XXXX.exe file that is copied to a FAT32 USB drive and booting from the One Time Boot menu.

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 One Time Boot menu on the computer.

You can confirm by booting your computer to the One Time Boot Menu to see if BIOS FLASH UPDATE is listed as a boot option . If the option is listed, then the BIOS can be updated using this method..

Updating from the One Time Boot menu

To update your BIOS from the One Time Boot menu, you need the following:

  • USB drive formatted to the FAT32 file system (the drive 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 must be connected to the computer
  • Functional computer battery to flash the BIOS

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

CAUTION:Do not turn off the computer during the BIOS flash update process. The computer may not boot if you turn off your computer.
  1. Turn off your computer, insert the USB drive where you copied the BIOS flash update file into a USB port of the computer.
  2. Turn on the computer and press to access the One Time Boot Menu. Select BIOS flash Update using the mouse or arrow keys then press Enter.
    The flash BIOS menu is displayed.
  3. Click Flash from file.
  4. Select the external USB device.
  5. Select the file and double-click the flash target file, and then click Submit.
  6. Click Update BIOS. The computer restarts to flash the BIOS.
  7. The computer will restart after the BIOS flash update is completed.

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