The following method will enable a Cisco Aironet Autonomous Access Points to be converted into Lightwright mode by flashing the code. I have tested this on c1252 model but the same method should work as long as the models are supported by Cisco.
Download the recovery image and place it in the TFTP Server.
Remove the trailing
.tar from the image filename, it should look something like the following.
Set the Laptop IP Address as follows…
IP Address: 10.0.0.5
Subnet Mask: 255.255.248.0
Default Gateway: 10.0.0.10
Once you are in RAMON format flash: and set the IP Address on the AP as the following.
Issue the following command on the AP to transfer the file from the TFTP Server to Flash
Use the following command to find the exact location of the image.
Set the boot image and reboot the Access Point.
Once booted into the LWAP image, setup the IP Addresses of the Controller
Now the AP should be able to join the controller.