I have a 2018 SVTC.
I am doing a SW update now. Latest version is on https://www.yamahamotorsports.com/transcontinental-touring/pages/infotainment-software-update and it is R12.0.6. It is supposed to fix iOS compatibility issues which I have noticed problems keeping songs playing on my iPhone (have had to keep pushing the "play" button).
Also, I started having issues with my sound system after activating SiriusXM: not playing any audio and hearing a clicking sound every minute or so. I figured out last night that it is caused by SiriusXM when it looses signal. Very bad. Causes loss of all audio, not just SiriusXM! I hope this SW update will fix that but Yamaha does not call it out as part of what is being fixed with this R12.0.6 update. Anyone else have this issue and fix it?