I just installed it from the link you provided, its the real app but I couldn't stream a movie after logging in though. It said something about unable to start the service please try again later....
Neither works for me even after rebooting. It DOES get rid of the unsupported device error but when I try to stream I get the error "unable to connect to netflix service........error 1005". This seems to be a very common theme over at the XDA forum so hopefully they'll get this worked out and we'll have some streaming goodness in the next few weeks (or DAYS! )