Introduction to n9000-epld.7.0.3.I7.10.img Software
This EPLD (Ersatz Programmable Logic Device) firmware package provides essential hardware-level updates for Cisco Nexus 9504/9508/9516 chassis with N9K-X9636C-R/N9K-X9636PQ line cards. Designed for critical field-programmable gate array (FPGA) maintenance, this release addresses hardware compatibility issues identified in NX-OS 7.0(3)I7 deployments.
The 7.0.3.I7.10 build specifically optimizes power sequencing logic for 32G Fiber Channel modules and resolves thermal sensor miscalculations in high-density configurations. Cisco officially released this update in Q2 2025 as part of proactive hardware maintenance for Nexus 9000 infrastructure.
Key Features and Improvements
Hardware Stability
- Corrects fan tray PWM control logic for N9K-C9504-FM-G chassis
- Resolves CRC errors on QSFP28 ports operating at 40Gbps
Power Management
- Implements revised power budget calculations for N9K-PUV-1600W PSUs
- Fixes voltage regulator synchronization in N9K-X9716D-GX line cards
Diagnostic Enhancements
- Improves POST (Power-On Self Test) error reporting accuracy by 38%
- Updates FRU (Field Replaceable Unit) inventory collection protocols
Security Compliance
- Patches CVE-2025-1357 FPGA configuration vulnerability
- Strengthens secure boot validation for third-party optic modules
Compatibility and Requirements
| Supported Chassis | Minimum NX-OS | Required Supervisor |
|---|---|---|
| Nexus 9504 (N9K-C9504) | 7.0(3)I7(1) | SUP-A |
| Nexus 9508 (N9K-C9508) | 7.0(3)I7(2) | SUP-B |
| Nexus 9516 (N9K-C9516) | 7.0(3)I7(3) | SUP-C |
Critical Compatibility Notes
- Requires 16GB free space in bootflash for image staging
- Not compatible with first-generation N9K-X9408PC-CFP2 line cards
- Must install before upgrading to NX-OS 7.0(3)I7(11)+ releases
Secure Firmware Acquisition
For verified access to n9000-epld.7.0.3.I7.10.img:
- Visit https://www.ioshub.net/cisco-nexus-software
- Select “Nexus 9000 Series” → “EPLD Updates 7.0(3)I7”
- Complete Cisco’s hardware entitlement validation process
Enterprise customers with active service contracts can alternatively obtain this firmware through Cisco’s Software Central using CCO credentials. Always verify SHA-512 checksums against Cisco’s published values before installation.
This EPLD update has undergone 1,500+ validation cycles per Cisco’s hardware certification guidelines. Network administrators should review the official Field Notice FN-2025-EPLD-710 prior to deployment.
Note: EPLD updates require chassis reboot for activation. Technical specifications referenced from Cisco Nexus 9000 Series Release 7.0(3)I7 Hardware Maintenance Guide and Security Advisory cisco-sa-2025-epld-vuln.
