Hi Denis,

a good person to talk to about the OS update would be George Kay, since he has a good report with Yamaha.

You can call them directly: (714)522-9000

Maybe they will pass it on to Yamaha Japan

BTW glad you like the styles.
I really like them too.

Good luck

Eric
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Genos, PSR-S970, TC Helicon VoiceLive3, Mackie 802-VLZ3 Mixer, 2 Bose L1 Pro16, Electro-Voice ZXA1 Subwoofer