. These models can typically play older SFF1 files, but older keyboards cannot play SFF2 files without conversion.
A significant portion of "free downloads" available on forums and file-sharing sites consists of styles extracted from newer keyboards (e.g., extracting Genos styles to use on a PSR-S770). Yamaha Psr Style Files Free Download
If you share these details, I can find direct links for your exact keyboard. loaded it onto the keyboard
: Offers free "Performance Styles" converted from Yamaha Motif and MOX synthesizers for use on PSR and Genos keyboards. Chris Eastown's Webpage Yamaha Psr Style Files Free Download
You downloaded the file, loaded it onto the keyboard, but it sounds like a cat walking on a keyboard. Here is the fix: