I have 5 ccess-point (AIR-AP1121G-A-K9) in automous mode (IOS), and now I will buy a controller.
Need I buy a new software (LWAPP) for APs? Or Can I change software free?
The software is free if you have access to the cisco site, or try your reseller.
The image is c1100-rcvk9w8-tar.123-11JX1
There is a upgrade tool that I would recommend using the LWAPP upgarde tool and make sure you save the SSC details as its an 1120?
The links below should help