[NUC] How to Use UEFI Shell to Update Your NUC with Visual BIOS

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The UEFI Flash BIOS update utility allows you to update the Visual BIOS from the EFI Shell.

1. Download the UEFI Flash BIOS Update file (*.UEFI.zip). Example:

Please follow the link to learn how to download BIOS for corresponding model: [NUC] Where Can I Download the BIOS File?

2. Double-click the *.UEFI.zip to extract its files.

3.Copy UefiFlash.efi and the .bio file to the bootable USB device.

4.Connect the USB drive to a port on the  NUC.

5.Configure the BIOS of the target computer to boot to the EFI Shell:

    a. Press F2 during start to enter BIOS setup.

    b. Go to Advanced > Boot > Secure Boot.

    c.  Disable Secure Boot, if enabled.

    d. Go to Advanced > Boot > Boot Configuration.

    e. In the Boot Devices pane, enable Internal UEFI Shell.

    f.  Press> F10 to save changes and exit BIOS Setup.

6. Press F10 during start to open the Boot Menu.

7. Select UEFI: Built-in EFI Shell.

8. Change the current directory to the USB flash drive by entering the command fsX: where X is the drive number of the USB flash drive from the device mapping list.    
Example: if your USB drive is fs3, then type fs3: and press Enter.

9. At the command prompt, type UefiFlash.efi XXX.bio, where XXX.bio is the filename of the .bio file and press Enter.

10. Press Y  to begin the update.

11. Wait for the BIOS update to complete.

12. The computer will restart when finished.

13. Set the BIOS back to original settings:

      a. Restart the computer.

      b. Press F2 during start to enter BIOS setup.

      c. Go to Advanced > Boot > Boot Configuration.

      d. In the Boot Devices pane, disable Internal UEFI Shell.

      e. Go to Advanced > Boot > Secure Boot.

      f.  Enable Secure Boot, if it was originally enabled.

      g. Press F10 to save changes and exit BIOS Setup.