I have the above access point and I can't get it to work in our lwapp environment because it seems as though the "clear lwapp private-config" command isn't available. I've had this happen before, and doing the reset always seems to clear the problem. But on this ap it doesn't work, I'm not sure why. I noticed that the ios ver is a little different ( 12.3(7) JA1 ) than the others. Is there anything I can do to clear the config on it and set the lwapp params?
The problem is that this is still a fully Autonomous AP the IOS image is not a LWAPP base/recovery image. This AP will need to be converted using the LWAPP Upgrade Tool. This will load an image like 12.3(11)JX and allow the AP to join the WLC.
Preparing for the Upgrade
You must complete these tasks before beginning the upgrade from autonomous to lightweight mode:
1. Prepare the infrastructure so that the upgraded lightweight access point discovers a controller.
2. The autonomous access points must be running Cisco IOS Release 12.3(7)JA or later to perform the lightweight mode conversion. If necessary, upgrade the access point to Cisco IOS Release 12.3(7)JA or later. For C3201WMIC, upgrade to 12.3(8)JK or later.
3. Prepare the controller for the upgrade process.
4. Download the Autonomous to Lightweight Mode Upgrade Tool and the upgrade image file from Cisco.com
From this good doc;
Upgrading Autonomous Cisco Aironet Access Points to Lightweight Mode
Cisco IOS Release 12.3(11)JX provides support for the lightweight access point protocol (LWAPP) for 1100, 1130, 1200, 1230, 1240, and 1300 series access points. When you use the Autonomous to Lightweight Mode upgrade tool to upgrade one of these access points to this release, the access point communicates with a Cisco wireless LAN controller and receives a full LWAPP configuration and software image from the controller. This release also functions as a recovery image if the access point fails to receive a full image from the controller.
Hope this helps!