To upgrade the firmware on the Cisco WLC 2504, follow these steps:
The 2504 uses a base license for 5, 25, or 50 APs. Sometimes, firmware resets the evaluation period. cisco wlc 2504 firmware download work
reached End of Software Maintenance on [5.1]. While downloads may still exist, active, newer, patched firmware beyond v8.10.x is unlikely. Always verify the latest available version on the Cisco Software Central portal . Why You Must Update Your 2504 WLC Firmware To upgrade the firmware on the Cisco WLC