I've uploaded the software
here. Note that not only has this remote been completely discontinued (to the point that H/K seems to have wiped out its existance from most of their servers), but it's based on the Harmony and is thus programmed entirely online - which means if the supporting servers no longer exist you simply cannot program it.
With that said, it seems as though programming may still be possible, but it might not go entirely smoothly. Check out the Harmony forum on this site for more specific help.