@Subotai
Hi JJ,
If I understand correctly, you currently have a CVP-809. As has already been written, all available styles from other models should actually work properly on the CVP-809 (former CVP models, Genos, all Tyros models, all PSR-S and SX models).
I can only imagine two reasons why it doesn't work: Either you tried to load a zip archive (without unpacking it beforehand and then loading the individual style files it contains), or you tried to load Registration banks from other Load models. This is not possible directly, and even with the current version "5.11 Special" of the "Yamaha Registration Manager" it is currently not possible to convert Registrations into the CVP-809 format, as far as I know.
Best regards,
Chris