Sub37 randomly cycling through patches - anyone have a fix for this?

So I’ve developed an issue with my Sub37 very recently. It will randomly cycle through all the patches rendering the synth unusable. On occasion it will stop on its own; I can access the menus or play it briefly but inevitably it starts cycling through the patches again. This issue happens when connected to my computer (iMac) via midi; it also happens when playing it as a standalone instrument. The firmware has been updated to 1.2.

Anyone encountered this before? Any ideas on a fix?