Help IDing IOS for Nickelodeon dance 2

Running wiiflow and got Nickelodeon dance 2 for the kiddos this Christmas. The dreaded update screen came up when the wife loaded the game. Luckily she did not upgrade. How do I go about identifying what IOS I need to load or what I need to do to get the game to play on the system?

Thanks in advance,

A:O