It is very time consuming to convert a style for a different model and needs skills and lots of techical knowledge about how Yamaha keyboards work and Genos got new voices and audio parts that our older models don't have.
What makes Genos' styles to sound so brilliant are the new voices with their effects,new revo drums,better equalization and not just the patterns of the style.
So to convert a style's drums note by note for all 17 parts of a style it may doesn't worth it at all.
You may have a result not even close to the original.
And definately not that easy that someone can explain in a single post.
But you could take a converted style of Genos for the psr s910 and use this program made by Jorgen to convert it for tyros 2 and see how it sounds.
You got to furthermore revoice the style,equalize the parts etc.
http://www.jososoft.dk/yamaha/software/sf2c/index.htmOcanimus' convrersions are here
http://psrtutorial.com/sty/collections/onacimus.htmlThank you Ocanimus for your work