Customer Affecting Changes | ConnectX-9 Firmware RN

Changes in This Release

This section provides a list of changes that took place in the current version and break compatibility/interface, discontinue support for features and/or OS versions, etc.

Introduced in Version	Description
N/A	N/A

Changes Planned for Future Releases

This section provides a list of changes that will take place in a future version of the product and will break compatibility/interface, discontinue support for features and/or OS versions, etc.

Planned for Version	Description
N/A	N/A

Changes in Earlier Releases

This section provides a list of changes that took place throughout the past two major releases that broke compatibility/interface, discontinued support for features and/or OS versions, etc.

For an archive of all changes, please refer to the Release Notes History section.

Introduced in Version	Description
82.48.1000	Transition to 2023 Microsoft UEFI Certificate Authority: To align with updated Microsoft UEFI Secure Boot requirements and the upcoming end-of-life of the 2011 Certificate Authority (CA), NVIDIA is transitioning to the 2023 CA. To ensure successful loading of the Expansion ROM (ExpROM) during the UEFI Secure Boot process, system BIOS and operating system trust stores must be updated to include the 2023 CA. Note: When performing a firmware update of ConnectX and BlueField devices the new certificate is required for Secure Boot. To continue supporting Secure Boot, systems must be updated to recognize the "Microsoft Option ROM UEFI CA 2023."
When using an optics module, if the required speed is lower than the module’s maximum supported speed, the user must configure the desired port link width. Note: This configuration must be repeated after every system reboot. To avoid reconfiguring it manually after each reboot, configure the requested speed using the following commands: `mlxconfig -d <device> set PHY_RATE_MASK_OVERRIDE_P<port>=1 mlxfwreset -d <device> r -y --no_mst mlxconfig -d <device> set PHY_RATE_MASK_P<port>=<PTYS.speed_mask> mlxfwreset -d <device> r -y --no_mst` Where `<PTYS.speed_mask>` is the speed mask defined in the PRM.

Introduced in Version

Description

82.48.1000

Transition to 2023 Microsoft UEFI Certificate Authority:

To align with updated Microsoft UEFI Secure Boot requirements and the upcoming end-of-life of the 2011 Certificate Authority (CA), NVIDIA is transitioning to the 2023 CA. To ensure successful loading of the Expansion ROM (ExpROM) during the UEFI Secure Boot process, system BIOS and operating system trust stores must be updated to include the 2023 CA.

Note: When performing a firmware update of ConnectX and BlueField devices the new certificate is required for Secure Boot. To continue supporting Secure Boot, systems must be updated to recognize the "Microsoft Option ROM UEFI CA 2023."

When using an optics module, if the required speed is lower than the module’s maximum supported speed, the user must configure the desired port link width.

Note: This configuration must be repeated after every system reboot.

To avoid reconfiguring it manually after each reboot, configure the requested speed using the following commands:

mlxconfig -d <device> set PHY_RATE_MASK_OVERRIDE_P<port>=1
mlxfwreset -d <device> r -y --no_mst
mlxconfig -d <device> set PHY_RATE_MASK_P<port>=<PTYS.speed_mask>
mlxfwreset -d <device> r -y --no_mst

Where <PTYS.speed_mask> is the speed mask defined in the PRM.

Discontinued Features

List of features which are supported in previous generations of hardware devices.

InfiniBand: FDR and lower speeds

For inquiries regarding mitigation, please contact NVIDIA Support.

Last updated: June 07, 2026