Before starting, ensure you have addressed these critical requirements: Configuration Backup export your current configuration to a TFTP, FTP, or SFTP server. AP Compatibility
All access points should show Registered or Joined . If APs stay in "Upgrading" or "Downloading" for more than 15 minutes, check your DHCP option 43 or DNS resolution. cisco 2500 series wireless controller firmware update
⚠️ APs will disconnect during reboot and rejoin after ~5–10 minutes. Before starting, ensure you have addressed these critical