Terry I hear that!....

I just went to the Yammy site and again looked at the tyros features. a good way down the list I see this:
Flash ROM Operating System
The TYROS operating system (built-in software that gives the keyboard its functions) is stored completely in flash memory, which means that updating the keyboard with the latest OS version is as easy as downloading it from Yamaha's Portable Keyboard Website

Doesn't this answer our os questions?
Lou