The GNS2000 is the biggest block of crap ever!
However, I have had no problems using it with a very latest IPad while flying with SkyDemon of Aware or RunwayHD
Getting tracks off it, deleting tracks and remembering the double on trick to get it to start logging though are a different matter! I resorted to using the mac app "myTracks" to download/delete tracks from it as the GNS2000 is not officially supported on mac, while at the same time being promoted as being compatible with other apple products - seems strange.
From everyone I have spoken with, The GNS2000 is the biggest block of crap ever!