Can't select optical for dialogue in Spark?

[Jon]

Had the same thing happening over and over. Seem to solve it by making sure each device had the latest spark up date - and then doing to full reset - where you unplug every device. Wait 30sec and then plug in dialog only - Wait for it to show solid white like 30 sec atleast. Then plug in each phantom and then do set up. Everything working perfect after that including optical switch

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