I’d like to get my colleague Nick’s opinion on your problem, but can you boot your H9 into update mode?  When you turn it off and then turn it on with the HotKnob pressed (the switch in the upper left hand corner of the H9), does it turn on with the word UPDATE on its display?

I tried that just now and nothing happened.

If it matters I’m wired in pre/post mode and was still getting signal through my chain, which I did not necessarily expect.  Does the Eventide default to true bypass when it’s off?