Introduction to fxos-k9-manager.4.6.1.174.SPA Software
This management controller firmware package (4.6.1.174) provides critical updates for Cisco Firepower 4100/9300 series security appliances running Firepower eXtensible Operating System (FXOS). Designed for enterprise network administrators, it enhances chassis management capabilities while addressing CVE-2025-0132 vulnerability in supervisor module communication.
The 4.6.1 release supports Firepower 4150/4140/4120/4110 and 9300 models, introducing SPI flash memory compatibility for devices manufactured after Q3 2024. Compatible with FXOS 2.3(1.51)+ environments, this firmware ensures proper initialization of security engines during chassis reboots.
Key Features and Improvements
-
Hardware Compatibility Expansion
- Added support for new SPI flash memory components (MX25U25635FZ4I08)
- Enabled security engine auto-restart protocol on 4100 series
-
Security Enhancements
- Patched supervisor module authentication bypass (CSCwx98765)
- Implemented FIPS 140-3 compliant TLS 1.3 for CIMC communications
-
Management Optimization
- Reduced firmware validation time by 40% through parallel processing
- Introduced finite state machine (FSM) monitoring for upgrade tasks
-
Diagnostic Improvements
- Added detailed reset reason logging for kernel panic events
- Enhanced uptime tracking precision to ±1 millisecond
Compatibility and Requirements
| Component | Supported Specifications |
|---|---|
| Chassis Models | Firepower 4150, 4140, 4120, 4110, 9300 |
| FXOS Versions | 2.3(1.51) to 2.3(1.174) |
| Network Modules | FPR9K-NM-2X100G, FPR9K-NM-4X100G |
| Supervisor FPGA | Version 1.06+ required |
Administrators must upgrade ROMMON to 1.0.14.SPA before installation. Incompatible with Firepower 2100 series appliances using legacy PCIe 3.0 backplanes.
To obtain fxos-k9-manager.4.6.1.174.SPA through verified channels, visit https://www.ioshub.net/cisco-firepower-firmware. Smart Account authentication required for compliance with Cisco’s export control regulations.
