Air-ct5500-k9-8-3-150-0 May 2026

The AIR-CT5500-K9 (Cisco 5508 Wireless Controller) is a legacy enterprise-grade platform designed to manage large-scale wireless networks. Running software version 8.3.150.0 marks the "end of the road" for this specific software line, as it was the final maintenance release for the 8.3 train. Software Version 8.3.150.0 Overview

Protocols and Features:

The identifier AIR-CT5500-K9-8-3-150-0 a specific firmware image file for the Cisco 5500 Series Wireless Controller (WLC) . This specific version belongs to the 8.3 release train air-ct5500-k9-8-3-150-0

Quick command to check current version on your WLC:
show sysinfo The AIR-CT5500-K9 (Cisco 5508 Wireless Controller) is a

: Aironet 1040, 1140, 1260, 2600, 3500, 3600, and 3700 series. : This is the last supported version for the Cisco Aironet 1142 CLI commands for performing the TFTP/FTP transfer and upgrade? Diagnosis: Code mismatch; the AP has a different

6. Rollback Plan

To revert to previous version:

Issue: APs stuck in "Downloading" state.

• Diagnosis: Code mismatch; the AP has a different primary image.
• Solution: Log into the AP console: debug capwap console cli. Then on WLC: config ap image predownload primary all.