How to tell exactly what type of firmware I'm running? (Pandora Battery)

It's driving me crazy...lol I checked on my Pandora battery install...and saw 5.50 GEN D-2..when I clicked on it..I got a message " This needs 5.50 GEN D-2 to run" I followed the install directions so shouldnt I already be running 5.50 GEN D-2? If not, how do I get it onto my memory stick?HoustonTX224