first. Version 1.9.0.0 or higher is required before moving to AireOS 8.4 or higher. Backup Configuration upload your configuration file to a TFTP/SFTP server before starting as a safety measure. 2. Step-by-Step Update Process (GUI) Release Notes - Cisco 2500 Series Wireless Controllers
Connected APs will download the new matching firmware from the controller. They will reboot individually. Track this progress under Wireless > Access Points to ensure all APs return to an "UP" status. Troubleshooting Common Issues
Direct upgrades are not always possible depending on your current version:
Type y when prompted to confirm the parameters and initiate the file transfer. 4. Activating the New Image and Rebooting cisco 2500 series wireless controller firmware update
Connect to the WLC via SSH or Console and enter the following sequence:
: List all connected Access Point (AP) models and verify they are supported by the target software version.
Are you aiming for a or trying to resolve a particular bug? Share public link Track this progress under Wireless > Access Points
What is your , and what target version are you aiming for? Are you using TFTP, SFTP, or FTP for the file transfer?
: Consult Cisco Release Notes to determine if a direct upgrade is possible or if intermediate "stepping stone" releases are required.
# Define the transfer protocol transfer download mode tftp # Set the server IP address transfer download serverip # Specify the file path and name transfer download path / transfer download filename .aes # Start the download process transfer download start Use code with caution. and write them to flash memory.
If you want to tailor this upgrade plan to your exact deployment, tell me:
Redownload the .aes file from Cisco and restart the transfer. APs fail to rejoin Incompatible AP hardware version
TFTP is acceptable for local, fast connections, but or FTP is highly recommended for larger image files to prevent timeout errors.
Monitor the transfer progress bar. Do not refresh or close the browser window. Method B: Via the CLI
: Click Download . The WLC will transfer the file, extract components, and write them to flash memory.