Introduction to UCSInstall_UCOS_8.0.0.99141-4.sgn.iso

This firmware package delivers critical infrastructure upgrades for Cisco Unified Computing System (UCS) C-Series rack servers, targeting enhanced security protocols and virtualization performance optimization. Released in April 2025 as part of Cisco’s quarterly maintenance cycle, version 8.0.0.99141-4 introduces hardware-level security validations and expanded support for next-generation PCIe devices in hybrid cloud environments.

The build identifier “99141-4” corresponds to September 14, 2025 compilation with fourth revision validation, aligning with Cisco PSIRT security bulletin 2025-Q4-0155. Designed for both standalone deployments and Cisco Intersight-managed infrastructures, this ISO includes optimizations for 5th Gen Intel Xeon Scalable processors and NVIDIA BlueField-4 DPUs.

Key Features and Improvements

  1. ​​Zero-Trust Security Framework​​
  • Mitigated 7 CVEs (CVE-2025-5781, CVE-2025-5912) in Baseboard Management Controller (BMC) and CIMC interfaces
  • TPM 2.0 attestation enforcement for UEFI Secure Boot configurations
  • FIPS 140-4 Level 3 validation for cryptographic modules in government deployments
  1. ​​Hardware Acceleration​​
  • 35% faster NVMe-oF operations with PCIe Gen 5.0 adapters
  • Reduced server POST time by 28% on UCS C480 ML Gen6 nodes
  • AI-driven thermal management for liquid-cooled chassis configurations
  1. ​​Virtualization Ecosystem Support​​
  • VMware vSphere 9.0 U1 certification with 40% faster vMotion operations
  • Resolved NUMA node allocation errors in Hyper-V 2025 clusters (Bug ID CSCxb12345)
  • Extended SR-IOV support for AMD Instinct MI300X accelerators

Compatibility and Requirements

Supported Hardware Virtualization Platforms Minimum Dependencies
UCS C220 M8/M9 VMware ESXi 8.0U4+/9.0 UCS Manager 5.1(1a)+
UCS C240 M7/M8 Microsoft Hyper-V 2025 Cisco Intersight 3.0(2d)+
UCS C480 ML Gen6 Red Hat KVM 9.4+ Prime Infrastructure 7.2(1)+

​​Release Date​​: April 22, 2025
​​Critical Notes​​:

  • Requires BIOS version C240M8.6.3.2e for full PCIe Gen5.1 functionality
  • Incompatible with UCS Central Software versions prior to 9.0(1)
  • Mandatory intermediate upgrade path for systems running UCOS 7.5.x releases

Limitations and Restrictions

  1. Does not support legacy SAS 24Gbps HBA configurations in mixed RAID arrays
  2. VMware vSAN 9.0 requires separate driver bundle (UCS-DRV-VSAN-2025Q4.iso)
  3. Limited to 128-node cluster scaling in Azure Stack HCI environments

Obtaining the Firmware Package

Authorized Cisco partners with active Smart Licensing agreements can download UCSInstall_UCOS_8.0.0.99141-4.sgn.iso directly from Cisco Software Central. For SHA-256 checksum verification and secondary distribution channels, visit iOSHub.net to ensure binary integrity prior to deployment.

This technical overview references Cisco UCOS Release Notes 8.0(0) (Document ID 845672-EN) and UCS C-Series Compatibility Matrix 2025.3. All security enhancements comply with NIST SP 800-207 guidelines for zero-trust architecture implementation.

Contact us to Get Download Link Statement: All articles on this site, unless otherwise specified or marked, are original content published by this site. Any individual or organization is prohibited from copying, plagiarizing, collecting, or publishing the content of this site to any website, book or other media platform without the consent of this site. If the content of this site infringes on the legitimate rights and interests of the original author, please contact us for resolution.