Download a recovery image (eg c1130-rcvk9w8-tar.124-10b.JDA.tar) for this AP model from Cisco & then upload it to your Autonomous AP using a TFTP server using below command.
AP5475.d0f5.2ee7# archive download-sw /force-reload /overwrite tftp://x.x.x.x/c1130-rcvk9w8-tar.124-10b.JDA.tar
Here is an example post of how to do this coversion
Once do this your AP is ready to register for a controller.
HTH
Rasika
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