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DGX B300 System Firmware Update Guide Version 26.03.1#

Highlights#

Added Support#

  • Provides updated motherboard tray package and GPU tray package, as shown in Firmware Package Details.

  • Includes a component package for TPM version updates.

BMC Fixes#

  • Improved handling of system fans.

  • Improved telemetry stability and responsiveness.

  • Fixed power button responsiveness.

  • Fixed drives presence detection.

  • Improved sensor accuracy issues.

  • Resolved unexpected system shutdowns caused by incorrect CPU temperature threshold settings.

  • Improvements to overall power handling.

  • SEL log improvements.

  • Fixed debug log collection.

SBIOS Fixes#

  • Resolved an issue where BIOS boot order changes made via Redfish API were not reflected after reboot.

GPU Tray Fixes#

  • Fixed a vBIOS firmware issue causing Blackwell NVLink GPU hangs and XID 150 errors after 60+ days uptime.

    Refer to GPU Tray Firmware Fixes for details.

The nvfwupd Tool#

Firmware Package Details#

This firmware release supports the following systems:

  • NVIDIA DGX B300 System

This firmware release supports the following operating systems:

  • NVIDIA DGX OS 7.3.1 and later

For more information about the operating systems, refer to the NVIDIA Base OS documentation.

You can download firmware packages from the NVIDIA Enterprise Support Portal.

The following table shows the firmware package files:

Components

Sample File Name

Combined archive

DGXB300_26.03.1.tar.gz

The combined archive includes the firmware for the system components and the firmware for the GPU tray.

  • Motherboard tray package (1.1.0)

  • Component package (TPM only)

  • GPU tray package (1.4.30)

  • nvfw_DGX_260326.1.0.fwpkg

  • nvfw_DGX_251208.1.0.fwpkg

  • nvfw_DGX-HGX-B300x8_260317.1.1.fwpkg

Firmware Versions and Update Duration#

If you are updating from version 25.12.1, the total update duration is approximately:

  • 2h 1m 9s for the motherboard tray using sequential updating

  • 1h 19m 31s for the motherboard tray using parallel updating

  • 11m 44s for the GPU tray using parallel updating

The following tables provide component firmware version information with updated versions shown in bold.

Motherboard Tray Component Firmware Versions#
Component
Version
Update Duration
from v25.12.1 (MM:SS)

Host BMC

01.01.25

Refer to BMC Changes for DGX B300 Systems for the list of changes.

25:50

Host BMC ERoT

04.0061

00:24

SBIOS ERoT

04.0061

00:25

SBIOS

01.00.06

Refer to SBIOS Changes for DGX B300 Systems for the list of changes.

09:19

CPLD DC-SCM

0.1.1.4

16:40

Motherboard CPLD

0.1.3.0

40:34

Backplane CPLD

0.1.0.8

12:19
Broadcom Gen5 PCIe Switch
(PEX89072-B01)
Switch 0: 0.0.8
Switch 1: 1.0.8
Switch 0: 00:34
Switch 1: 00:34

Intel NIC 1G

3.30

PSU (Delta ECD17010013)
Primary 0105
Secondary 0105
Community 0105

LiteON PSU

0.6.0.6
E1.S NVMe SSD
(Micron 9550 Gen5)

F3MU090

E1S-SW-CPLD

0.1.0.7

14:30
M.2 NVMe
(SKH 750-0605-000)

51092A30

TPM

15.24
GPU Tray Component Firmware Versions#
Component
Version
Update Duration
from v25.12.1 (MM:SS)

VBIOS

97.10.64.00.0C

Total: 11:44

ERoT

01.04.0046

HMC

B3-2511-04.0

ConnectX-8

40.47.2526

NVSwitch

35.2014.4770

FPGA

1.54

Firmware Update Procedure#

Refer to Firmware Update Steps.