Convert from lightweight to autonomous Cisco AP
make sure you have a dhcp server on computer.
AP>en
AP#debug capwap console cli
AP#config t
AP(confg)int gi 0
AP(confg-if)ip addr (same subnet as that of the laptop)
AP(confg-if)end
AP#archive download-sw /force-reload /overwrite tftp://192.168.1.1/ap3g2-k9w7-tar.152-4.JB4.tar