Power on the AP while holding down the Mode button until the LED turns red, then release. Wait for the “ap:” prompt. Then do this:
ap: delete flash:capwap-saved-config Are you sure you want to delete "flash:capwap-saved-config" (y/n)?y File "flash:capwap-saved-config" deleted ap: boot Rebooting system to reset DPAA...
And for good measure
AP#delete flash:config.txt Delete filename [config.txt]? Delete flash:/config.txt? [confirm] AP#reload Proceed with reload? [confirm]