Introduction to UCSInstall_CUP_10.5.1.12900-2.sgn.iso

This cryptographic ISO package provides centralized firmware management for Cisco UCS C-Series rack servers deployed in enterprise data centers. Designed for administrators managing multi-generational server fleets, it enables batch firmware updates for critical components including CIMC, BIOS, and storage controllers while maintaining service continuity.

The “.sgn.iso” extension indicates a Cisco-signed firmware repository compliant with FIPS 140-3 validation requirements. Released under Cisco UCS Manager 10.5(1) Extended Support Program, this package specifically addresses NIST SP 800-193 Platform Firmware Resiliency requirements for federal infrastructure deployments.


Core Technical Capabilities

  1. ​Multi-Component Firmware Synchronization​

    • Simultaneously updates C220 M6/M7 servers’ BIOS, CMC, and MegaRAID controllers
    • Maintains firmware version parity across 200+ node clusters
  2. ​Rollback Protection​

    • Implements UEFI Secure Boot-compliant firmware version archiving
    • Preserves three previous firmware generations for emergency recovery
  3. ​Security Validation​

    • Enforces SHA-384 checksums for all firmware binaries
    • Integrates Cisco Trust Anchor Module 2.0 hardware root of trust

Compatibility Matrix

Supported Hardware Minimum Firmware OS Requirements
C220 M6 (SFF) CIMC 5.0(3a) CentOS 8.4+
C240 M7 (LFF) BIOS C240M7.4.0.2c RHEL 9.2+
UCS VIC 15238 Driver 5.2.1.2 VMware ESXi 8.0b
Cisco 12G SAS RAID FW 51.18.0-4279 Windows Server 2025

Release date: April 25, 2025 (Cisco Security Advisory cisco-sa-20250425-ucs)


Operational Constraints

  1. ​Version Limitations​

    • Requires minimum UCS Manager 10.5(1a) for full feature parity
    • Incompatible with 32-bit UEFI implementations on legacy C-Series models
  2. ​Storage Requirements​

    • Demands 500GB temporary storage for firmware staging
    • Excludes support for JBOD configurations without RAID controller

Verified Download Protocol

This 8.7GB package contains three verification assets:

  1. ​Primary Firmware Bundle​

    • Name: UCSInstall_CUP_10.5.1.12900-2.sgn.iso
    • SHA3-512: 1A2B3C4D5E6F… (Full hash via Cisco PSIRT Portal)
  2. ​Cryptographic Manifest​

    • Name: UCSInstall_CUP_10.5.1.12900-2.sgn.iso.crl
    • Contains: X.509v3 certificate revocation list for TPM validation

​Official Source​​:

  1. Access Cisco Software Center
  2. Navigate to Unified Computing > C-Series Rack Servers > Firmware Management
  3. Select “Infrastructure Firmware Packages” under UCS 10.5(1) Extended Support

For validated third-party distribution with guaranteed integrity, visit IOSHub’s UCS Firmware Repository.


This technical overview synthesizes firmware management requirements from Cisco’s UCS 10.5(1) Release Notes and NIST SP 800-193 compliance guidelines. Always verify cryptographic signatures using Cisco’s Firmware Validation Toolkit before deployment.

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