Upgrade Autonomous AP to LWAPP
Download the Upgrade Tool v3.4 from the Cisco Software Site.
Install and run it.
Create a comma seperated file with :
IP Address AP, Username, Password, Enable Password.
Use this file at IP File on the Upgrade Tool.
Make sure you use the correct recovery image.
It is possible that you think you upgraded the AP (Everything is completed), but when you have a look at the Summary Log you can see an error. For instance when the AP doesn’t have the station-role set to root.