NUC Firmware Integrator Tool includes:
iChlogo -- Allow to replace the default logo image with a customer image.
iDmiEdit -- Allow to modify strings associated with SMBIOS tble.
iFlashV -- Allow to update system BIOS, logo image and specific OEM activation key.
iSetupCfg -- Allow to extract setup variable directly from the BIOS, Change settings using a text editor and then update the BIOS with the customer setting.

It is recommended to download and update the BIOS and firmware for system performance optimization. The update takes a few minutes. Do not turn your computer power off during the update process.

Overview:
* Security Update
* Bug fix

How to install BIOS: README

This download record provides options for updating the BIOS for:

Intel® NUC 8 Pro Mini PC NUC8v5PNK
Intel® NUC 8 Pro Mini PC NUC8v7PNK
Intel® NUC 8 Pro Kit NUC8v5PNK
Intel® NUC 8 Pro Kit NUC8v5PNH
Intel® NUC 8 Pro Kit NUC8v7PNK
Intel® NUC 8 Pro Kit NUC8v7PNH
Intel® NUC 8 Pro Board NUC8v5PNB
Intel® NUC 8 Pro Board NUC8v7PNB
You only need to download one.

The readme file includes BIOS update instructions for advanced users. If you need complete step-by-step instructions on how to use each of these BIOS update methods, refer to BIOS update instructions.

Which file should I choose?

1) Express BIOS update [PNWHL57v.0052.EBU.exe] - Self-extracting Windows*-based update file, designed to be used on Windows systems.
2) F7 BIOS update [PNv0052.CAP] - .CAP file to be used for F7 BIOS Update method. It requires a USB flash device.
3) UEFI BIOS update [PNWHL57v.0052.UEFI.zip] - Allows you to update the BIOS from the EFI Shell. It requires a USB flash device.
4) BIOS Recovery [PNWHL57v.0052.RECOVERY.zip] - In the unlikely event that a BIOS update is interrupted, it's possible the BIOS may be left in an unusable state. Use the recovery BIOS update to recover from this condition. It requires a USB flash device. Follow the recovery instructions in the Readme file.