Hello, I have Voice guide issues, too. I'm totally blind, Just bought a new CVP809 piano (great instrument!), downloaded and installed Voice guide files in a USB key, it works very well but not in all screens. In many displays, many important commands are not vocalized. For example, in main menu, items like Tempo, Transpose, Split/fingering are totally not accessible (no voice), and I can only press Home button to take back control of the piano. Also, after recording a new song, it seems that Save function is not spoken, and also Channel setting for multiparts MIDI recording. I really do not understand where could be the problem. I just tried a different USB key, and I downloaded all Voice Guide files again from Yamaha web site without any change. Any idea? If not, anyone has right way to report this to Yamaha? Thanks.