Not all the CVP209 styles will work on the 9000pro or the PSR9000. Those styles called "session styles" are not backwards compatible. If you try to play these in the 9000 series you get an error reading on the screen. It's the session styles that are the much more exciting styles with much more "content" in the styles. I've checked with Yamaha when I noticed the downloaded styles worked in the PSR2000 but not the PSR9000 a few months ago.
George Kaye
Kaye's Music Scene
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George Kaye
Kaye's Music Scene (Closed after 51 years)
West Hills, California
(Retired 2021)