I would like to consider upgrading the firmware on my 4400 WLC from version 4 to version 5, but wondering what the steps would involve on doing this. Is it a major project to do, or is it fairly simple? I've been having issues with my AP's finding the wrong controller and read that the new firmware version has a better GUI and easier to fix this problem. I can open a case up with TAC on how to do this if it's too intensive to do over these forums. Thanks.