Try to update an autonomous AP AIR-AP1142N-E-K9 (software C1140-K9W7M, version 12.4(21a)JA1 ) with the upgrade tool but get the error-message "not supported AP". Tool version is: CiscoAironet-AP-to-LWAPP-Upgrade-Tool-v205.exe
Is it the conversion to Lwapp supported for the AP1142N and how can I convert?
Thanks for any help.
Here's another method:
Copy the LWAP IOS (with an "rcv" prefix in the filename) to the AP and let the AP boot that image. Your AP can now join a WLC.