In December 2022, an AP image signing certificate expired, causing many lightweight access points to become stuck in a perpetual download loop. Firmware updates to recent 8.5.x releases provide workarounds and fixes for this widespread issue.
Log into the WLC web interface using a browser. The default address is https://<controller-ip-address> . Use an administrator account with full privileges. cisco 2500 series wireless controller firmware update
Even though the 2504 is EOL, several compelling reasons justify performing a firmware update: In December 2022, an AP image signing certificate
(Cisco Controller) >config ap cert-expiry-ignore ssc enable (Cisco Controller) >config ap cert-expiry-ignore mic enable In December 2022
Upgrading the firmware on a Cisco 2500 Series Wireless Controller (WLC)—primarily the 2504 model Go to product viewer dialog for this item.