To close the question on my controller, there was a loose connector. The firmware exchange worked for the conditions I have.
That leaves us to figure out the issue with your firmware.
All of the older ST16 versions are available. But I am not sure if they will help. And I will have to refresh my memory of how to load them. @Steve Carr may also be able to give advice.
I'll go look at the other firmware.
In the meantime, I will ask if anyone recognizes the firmware that was originally loaded on this ST16.

That leaves us to figure out the issue with your firmware.
All of the older ST16 versions are available. But I am not sure if they will help. And I will have to refresh my memory of how to load them. @Steve Carr may also be able to give advice.
I'll go look at the other firmware.
In the meantime, I will ask if anyone recognizes the firmware that was originally loaded on this ST16.
