Customer Affecting Changes

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.

This is the final release signed with the 2011 CA. Beginning in February 2026, all releases will be signed exclusively with 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: Systems must be updated to recognize the 2023 CA to prevent UEFI drivers or ExpROMs from failing to load during boot before June 27, 2026.

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40.46.1006

Renamed firmware-generated PLDM images to include the firmware name and PSID.

40.45.1020

Downgrading the ConnectX-8 SuperNIC firmware to a version earlier than the April release (40.45.1020) is not supported

The default CNP moderation behavior has been changed from per-flow to per-port to align with previous device generations. A dedicated mlxconfig parameter, ROCE_CC_CNP_MODERATION, is available to modify this configuration if needed.

40.44.1036

In ConnectX-8, the DIAG_COUNTER interface has been changed from the following set of commands:

• SET_DIAGNOSTIC_PARAMS

• QUERY_DIAGNOSTIC_PARAMS

• QUERY_DIAGNOSTIC_COUNTERS

• ICMD_SET_DIAGNOSTIC_PARAMS

• ICMD_QUERY_DIAGNOSTIC_PARAMS

• ICMD_QUERY_DIAGNOSTIC_COUNTERS

to:

• DIAG_DATA_OWNERSHIP

• DIAG_DATA_PARAMS_CONTEXT

• DIAG_DATA_ID_LIST

• DIAG_DATA_QUERY

The old interface will now return zero values when queried.