Hi Fernando,
I suspect that Yamaha will soon offer the Genos version of the "Fiesta Caliente 2" Pack for free download.
Unfortunately, I can't help you at the moment, because I only have a Genos and a Tyros5. And a user of a PSR-S770 / 775/970/975 or SX700 / 900, for which the pack is currently available, could only copy the Styles and Registrations contained (only one by one) if the Pack is on the keyboard installed. However, the Expansion Voices included in the Pack CANNOT be copied. Therefore the Styles and Registrations will not work as intended.
I therefore recommend that you just wait a little longer ...
Thank you Pietro for link in Fiesta Caliente 1. Actually this pack is in my Genos.
In Genos when you turn on with the power and playlist buttons at same time, the system comes like another disc in the PC. From there I think you can copy anything from the SSD of to PC or vicecersa. I suppose this is similar in SX900. Anyway I wait Yamaha for .cpf file for Genos.
I think Genos sales in Mexico is low and perhaps is the reason for not include it in this pack.
Best Regards.
Fernando