THANKS! I've got 'SysEx480', that is good for M1...I'll try to use it with my Trinity.
Do you think it need to use a Midi interface or TO HOST link is supported too?

Another question: I can't modify multisalmple you said, but what about other sound's parameter that now (without a computer) I can't change? (for example, I want to add portamento to a mono-Synth sound). In the user guide I red that with a computer program (an editor I think) this is possible. Is it true?