Total stupid question but is the shutter USB a micro or something on top of the unit? I see a hole with a 9red LED light. but Is that little USB the correct one? Just making sure sure I have this right. You have to connect to the shutter Arduino board directly to update the firmware? I tried connecting to rotator board board and that didn’t locate shutter. And as of now which shutter firmware version should I use that works best? The one on github Nexdome automation page?