Air-ct5500-k9-8-3-150-0

If you have a 5508 or WiSM2 controller currently on , you cannot jump to modern code in one step.

No software is perfect. While stable, this version has specific quirks documented in Cisco Bug IDs: air-ct5500-k9-8-3-150-0

Full CAPWAP encryption between access points and the controller. If you have a 5508 or WiSM2 controller