How do I OAD enable my host device?

Answer:

Z.O.A.D. only works with a Texas Instruments Z-Stack board which is running the ZPortApp application firmware. The ZPortApp.hex file can be found in the ".<Install folder>/Z.O.A.D./Images" folder which is part of the Texas Instruments Z-Stack documentation.

You must use the IAR Embedded Workbench application to load the host device with the ZPortApp.hex image. How to do this is described in the Z-Stack developer note titled "Developer Notes - Over Air Download".