I assume you mean OANP. That's only used for custom serial dataset connections. You don't need it unless you're trying to engineer your own software data stream.
My classics screen went out, dynon rebuilt it for me and after reinstalling it the wifi is not working, and yes the wifi dongle is plugged into one of the USB ports on the back of the classic. Does anyone out there have any insights?
I have no idea about the spec. Since it's a custom option, I assume the only data included would be what you put there. I'm not the software engineering type, so I'm probably not the best person to ask.