This page lists Instrument Definition Files for a number of Yamaha Genos, Tyros, PSR, CVP, DGX, YPG and YPT keyboards collected from various sources. Thanks.
It has been reported that some of the files have errors; but I do not have the time to check the files.
Please contact the creator (normally shown in the file) for error handling - or correct the errors yourself in a text editor.
Furthermore you will find links to sites explaining the use of the files; and how to create an ins-file yourself.