This procedure follows Cisco best practices, including pre-checks, backup, upgrade via TFTP/FTP/SFTP, and post-validation.
With a click of "Download," the progress bar began its slow crawl, transferring the code into the controller’s Flash RAM. The Reboot and the Result cisco 2500 series wireless controller firmware update
(Cisco Controller) > save config
Manufacturer's Name.............................. Cisco Systems Inc.
Product Name..................................... Cisco Controller
Product Version.................................. 8.5.140.0
...
Step 4: Save and Reboot. The controller will validate the image. Then: Download the appropriate controller image from Cisco (match
Sometimes the new firmware introduces a bug. To downgrade from 8.5.x to 8.3.x: (Cisco Controller) > save config