First Published: September 23, 2025

Cisco UCS Manager Cross-Version Firmware Support, Release 4.3

The Cisco UCS Manager A bundle software (Cisco UCS Manager, Cisco NX-OS, IOM and FEX firmware) can be mixed with previous B or C bundle releases on the servers (host firmware [FW], BIOS, Cisco IMC, adapter FW and drivers).

Cisco UCS Equivalency Matrix for Cisco Intersight, Cisco IMC, and Cisco UCS Manager outlines the release timeline for Cisco Intersight, Cisco Integrated Management Controller (IMC), and Cisco UCS Manager (UCS Manager). It includes essential information such as the date each patch was posted, the specific patch version, and the platforms that are supported by each release. By referring to this matrix, you can identify the appropriate firmware and software versions required for your servers before migrating them to Cisco Intersight. This ensures that your server infrastructure remains supported and operates efficiently during and after the transition.

The following table lists the mixed A, B, and C bundle versions that are supported on Cisco UCS 6300, 6400 series and 6536 Fabric Interconnects:

Table 1. Mixed Cisco UCS Releases Supported on Cisco UCS 6300, 6400, 6536 Series Fabric Interconnects

Infrastructure Versions (A Bundles)

Host FW Versions (B or C Bundles)

4.0(1)

4.0(2)

4.0(4)

4.1(1)

4.1(2)

4.1(3)

4.2(1)

4.2(2)

4.2(3)

4.3(2)

4.3(3)

4.3(4)

4.3(5)

4.3(6)

4.3(6)

—

—

—

—

—

—

—

—

—

6332, 6332-16UP, 6454, 64108, 6536

6332, 6332-16UP, 6454, 64108, 6536

6332, 6332-16UP, 6454, 64108, 6536

6332, 6332-16UP, 6454, 64108, 6536

6332, 6332-16UP, 6454, 64108, 6536

4.3(5)

—

—

—

—

—

—

—

—

—

6332, 6332-16UP, 6454, 64108, 6536

6332, 6332-16UP, 6454, 64108, 6536

6332, 6332-16UP, 6454, 64108, 6536

6332, 6332-16UP, 6454, 64108, 6536

6332, 6332-16UP, 6454, 64108, 6536

4.3(4)

—

—

—

—

—

—

—

—

—

6332, 6332-16UP, 6454, 64108, 6536

6332, 6332-16UP, 6454, 64108, 6536

6332, 6332-16UP, 6454, 64108, 6536

6332, 6332-16UP, 6454, 64108, 6536

6332, 6332-16UP, 6454, 64108, 6536

4.3(3)

—

—

—

—

—

—

—

—

—

6332, 6332-16UP, 6454, 64108, 6536

6332, 6332-16UP, 6454, 64108, 6536

6332, 6332-16UP, 6454, 64108, 6536

6332, 6332-16UP, 6454, 64108, 6536

6332, 6332-16UP, 6454, 64108, 6536

4.3(2)

—

—

—

—

—

—

—

—

—

6332, 6332-16UP, 6454, 64108, 6536

6332, 6332-16UP, 6454, 64108, 6536

6332, 6332-16UP, 6454, 64108, 6536

6332, 6332-16UP, 6454, 64108, 6536

6332, 6332-16UP, 6454, 64108, 6536

4.2(3)

—

—

—

—

—

—

6200, 6332, 6332-16UP, 6454, 64108

6200, 6332, 6332-16UP, 6454, 64108

6200, 6332, 6332-16UP, 6454, 64108, 6536

6332, 6332-16UP, 6454, 64108, 6536

6332, 6332-16UP, 6454, 64108, 6536

6332, 6332-16UP, 6454, 64108, 6536

6332, 6332-16UP, 6454, 64108, 6536

6332, 6332-16UP, 6454, 64108, 6536

4.2(2)

—

—

—

—

—

—

6200, 6332, 6332-16UP, 6454, 64108

6200, 6332, 6332-16UP, 6454, 64108

6200, 6332, 6332-16UP, 6454, 64108

6332, 6332-16UP, 6454, 64108

6332, 6332-16UP, 6454, 64108

6332, 6332-16UP, 6454, 64108

6332, 6332-16UP, 6454, 64108

6332, 6332-16UP, 6454, 64108

4.2(1)

—

—

—

—

—

—

6200, 6332, 6332-16UP, 6454, 64108

6200, 6332, 6332-16UP, 6454, 64108

6200, 6332, 6332-16UP, 6454, 64108

6332, 6332-16UP, 6454, 64108

6332, 6332-16UP, 6454, 64108

6332, 6332-16UP, 6454, 64108

6332, 6332-16UP, 6454, 64108

6332, 6332-16UP, 6454, 64108

4.1(3)

—

—

—

6200, 6332, 6332-16UP, 6454, 64108

6200, 6332, 6332-16UP, 6454, 64108

6200, 6332, 6332-16UP, 6454, 64108

6200, 6332, 6332-16UP, 6454, 64108

6200, 6332, 6332-16UP, 6454, 64108

6200, 6332, 6332-16UP, 6454, 64108

6332, 6332-16UP, 6454, 64108

6332, 6332-16UP, 6454, 64108

6332, 6332-16UP, 6454, 64108

6332, 6332-16UP, 6454, 64108

6332, 6332-16UP, 6454, 64108

4.1(2)

—

—

—

6200, 6332, 6332-16UP, 6454, 64108

6200, 6332, 6332-16UP, 6454, 64108

6200, 6332, 6332-16UP, 6454, 64108

6200, 6332, 6332-16UP, 6454, 64108

6200, 6332, 6332-16UP, 6454, 64108

6200, 6332, 6332-16UP, 6454, 64108

—

—

—

—

—

4.1(1)

—

—

—

6200, 6332, 6332-16UP, 6454, 64108

6200, 6332, 6332-16UP, 6454, 64108

6200, 6332, 6332-16UP, 6454, 64108

6200, 6332, 6332-16UP, 6454, 64108

6200, 6332, 6332-16UP, 6454, 64108

6200, 6332, 6332-16UP, 6454, 64108

—

—

—

—

—

4.0(4)

6200, 6332, 6332-16UP, 6454

6200, 6332, 6332-16UP, 6454

6200, 6332, 6332-16UP, 6454

6200, 6332, 6332-16UP, 6454

6200, 6332, 6332-16UP, 6454

6200, 6332, 6332-16UP, 6454

6200, 6332, 6332-16UP, 6454

6200, 6332, 6332-16UP, 6454

6200, 6332, 6332-16UP, 6454

—

—

—

—

—

4.0(2)

6200, 6332, 6332-16UP, 6454

6200, 6332, 6332-16UP, 6454

6200, 6332, 6332-16UP, 6454

6200, 6332, 6332-16UP, 6454

6200, 6332, 6332-16UP, 6454

6200, 6332, 6332-16UP, 6454

6200, 6332, 6332-16UP, 6454

6200, 6332, 6332-16UP, 6454

6200, 6332, 6332-16UP, 6454

—

—

—

—

—

4.0(1)

6200, 6332, 6332-16UP, 6454

6200, 6332, 6332-16UP, 6454

6200, 6332, 6332-16UP, 6454

6200, 6332, 6332-16UP, 6454

6200, 6332, 6332-16UP, 6454

6200, 6332, 6332-16UP, 6454

6200, 6332, 6332-16UP, 6454

6200, 6332, 6332-16UP, 6454

6200, 6332, 6332-16UP, 6454

—

—

—

—

—

The following table lists the mixed A and B bundle versions that are supported on Cisco UCS X-Series Direct:

Table 2. Mixed Cisco UCS Releases Supported on Cisco UCS X-Series Direct

Host FW Versions (B Bundles)

Infrastructure Versions (A Bundles)

4.3(4)

4.3(5)

4.3(6)

4.3(6)

UCSX-S9108-100G

UCSX-S9108-100G

UCSX-S9108-100G

4.3(5)

UCSX-S9108-100G

UCSX-S9108-100G

UCSX-S9108-100G

4.3(4)

UCSX-S9108-100G

UCSX-S9108-100G

UCSX-S9108-100G

Note

 

In a setup equipped with Cisco UCS X210c M8 Compute Node, you cannot downgrade Infrastructure Version (A Bundle) or Host Firmware Version (B bundle) to any release earlier than 4.3(6a).

In a setup equipped with Cisco UCS X-Series Direct, you cannot downgrade Infrastructure Version (A Bundle) to any release earlier than 4.3(4b).

The following table lists the mixed A, B, and C bundle versions that are supported on Cisco UCS Mini fabric interconnects:

Table 3. Mixed Cisco UCS Releases Supported on Cisco UCS Mini Fabric Interconnects

Infrastructure Versions (A Bundles)

Host FW Versions (B or C Bundles)

4.0(1)

4.0(2)

4.0(4)

4.1(1)

4.1(2)

4.1(3)

4.2(1)

4.2(2)

4.2(3)

4.3(2)

4.3(3)

4.3(4)

4.3(5)

4.3(6)

4.3(6)

—

—

—

—

—

—

—

—

—

6324

6324

6324

6324

6324

4.3(5)

—

—

—

—

—

—

—

—

—

6324

6324

6324

6324

6324

4.3(4)

—

—

—

—

—

—

—

—

—

6324

6324

6324

6324

6324

4.3(3)

—

—

—

—

—

—

—

—

—

6324

6324

6324

6324

6324

4.3(2)

—

—

—

—

—

—

—

—

—

6324

6324

6324

6324

6324

4.2(3)

—

—

—

—

—

—

6324

6324

6324

6324

6324

6324

6324

6324

4.2(2)

—

—

—

—

—

—

6324

6324

6324

6324

6324

6324

6324

6324

4.2(1)

—

—

—

—

—

—

6324

6324

6324

6324

6324

6324

6324

6324

4.1(3)

—

—

—

6324

6324

6324

6324

6324

6324

6324

6324

6324

6324

6324

4.1(2)

—

—

—

6324

6324

6324

6324

6324

6324

—

—

—

—

—

4.1(1)

—

—

—

6324

6324

6324

6324

6324

6324

—

—

—

—

—

4.0(4)

6324

6324

6324

6324

6324

6324

6324

6324

6324

—

—

—

—

—

4.0(2)

6324

6324

6324

6324

6324

6324

—

—

—

—

—

—

—

—

4.0(1)

6324

6324

6324

6324

6324

6324

—

—

—

—

—

—

—

—

The following table lists the mixed B, C bundles that are supported on all platforms with the 4.3(6)A bundle:

Table 4. Mixed B, C Bundles Supported on All Platforms with the 4.3(6)A Bundle

Infrastructure Versions (A Bundles)

Host FW Versions (B, C Bundles)

4.3(6)

6300

6324

6400

6500

UCSX-S9108-100G

Note

 

Cisco UCSX-S9108-100G supports only Cisco UCS X-Series Servers.

4.3(6)

Yes

Yes

Yes

Yes

Yes

4.3(5)

Yes

Yes

Yes

Yes

Yes

4.3(4)

Yes

Yes

Yes

Yes

Yes

4.3(3)

Yes

Yes

Yes

Yes

No

4.3(2)

Yes

Yes

Yes

Yes

No

4.2(3)

Yes

Yes

Yes

Yes

No

4.2(2)

Yes

Yes

Yes

Yes

No

4.2(1)

Yes

Yes

Yes

Yes

No

4.1(3)

Yes

Yes

Yes

Yes

No

4.1(2)

Yes

Yes

Yes

No

No

4.1(1)

Yes

Yes

Yes

No

No

4.0(1), 4.0(4)

(B, C Bundles)

No

No

No

No

No

Important

If you implement cross-version firmware, you must ensure that the configurations for the Cisco UCS domain are supported by the firmware version on the server endpoints.