SOtM sMS-200 Zone Disappeared

It seems you have the same issue as @Jean-Pierre_Lapalme in this thread:

Have you re-imaged your SOtM’s microSD with the current firmware (or previous)?

Let’s see what @May_Park can say regarding this issue?

Thing is, i have two SOtM sMS-200 Neo, one Ultra, both work just fine as Roon Ready endpoints with my DAC’s