Hi George,
What Lee is saying is that
IF you want to use the UDP Unicast Messaging, (which you can't currently do as this version of SkyDemon hasn't yet been released) your PilotAware
MUST be running Kernel v4.4xx firmware as shown on the
Home Screen of your PilotAware after logging onto this from your tablet (or whatever).
If your PilotAware is running the older Firmware - Kernel v3.18.xx and you want to use the UDP Messaging, you have to update your PilotAware by a
FULL SD Card Software Update - as described in the Operating Manual available on
http://www.pilotaware.com/documents/But you don't HAVE to update unless you want to or are experiencing problems with SkyDemon (which I currently don't and I'm still running the old setup).
Hope this helps clarify things.
Regards
Peter