I’ve got to say, I’ve never experienced anything like this with this pedal. I’m sorry for the frustration and I commend you for your persistence. At this point we’ve pretty much ruled out everything that I can think of outside of the microcontroller. The Quaverato is a pretty simple pedal from an electrical perspective so there’s not much that can go wrong…Now that we’ve ruled out basically everything else I have confidence that a re-flashed/new micro will get it back to working. So maybe your original hunch was correct, that the micro was damaged somehow. It may have been damaged through static electricity in assembly…we test all these chips before we send them out so it was working at some point.
If you have access to a USB tiny you can re-flash it using our ZDL Updater software available on our website to see if that helps, or you can sent the chip into us and we can either re-flash it or replace it depending on what it needs.
Once again, I’m sorry for the frustration.
-Brach