we are planning to deploy cisco virtual wireless controller 7.4 version
we have LWAP cisco 1600i series AP's of 40..
As per docs, we understood that to make join a access point to the controller, we need to upgrade a AP to 7.4 image.Is the only way or is there other route to workout ?
1. is there any procedure or video demo for how to upgrade
2. Is there any free tool can we get to upgrade at a time 40 Aps should we do individually