Intel® Ethernet Connections Boot Utility, Preboot Images, and EFI Drivers

15755
10/16/2026

Introduction

This download version 31.3 installs UEFI drivers, Intel® Boot Agent, and Intel® iSCSI Remote Boot images to program the PCI option ROM flash image and update flash configuration options.

Available Downloads

  • Microsoft Windows*
  • Size: 6.7 MB
  • SHA512: 2b8c492be8a9ed28291c5b9bf596a3febf8f52adccb73e9d955616873847e2a00b57de04540f954f891a0a2b986cd251c0e45f646501e3b219d6b96361ed8976
  • Linux*
  • Size: 3.3 MB
  • SHA512: 8a6355a2d5de07d7bdbc34a10592c0ec0786513d221bcd32beca80771338dfdbb732b97c07c7f49c48628a6ce9dc897db185630bd9c3b0e271e6a082ef5febd5

Detailed Description

Purpose

This package contains software and drivers for pre-boot environments, including UEFI drivers, Intel® Boot Agent, and Intel® Ethernet iSCSI Remote Boot images.

Overview

The Intel® Ethernet Flash Firmware Utility (BootUtil) is used to update configurations and program the PCI option ROM on the flash memory of supported Intel PCI and PCI-Express*-based network adapters.  BootUtil replaces existing utilities and provides the functionality of the older IBAUTIL, ISCSIUTL, LANUTIL, and FLAUTIL. BootUtil supports all the adapters supported by the previous utilities.

See bootutil.txt for more information.

What 's new?

See the release notes and readme for what's new, operating systems support, user guides, known issues, and more.

Which file should I download?

  • PREBOOT.ZIP: Documentation, utilities, and boot images for Windows*, EFI, and DOS
  • Preboot.tar.gz : Documentation, utilities, and boot images for Linux*

Disclaimers1

Product and Performance Information

1

Intel is in the process of removing non-inclusive language from our current documentation, user interfaces, and code. Please note that retroactive changes are not always possible, and some non-inclusive language may remain in older documentation, user interfaces, and code.