Thank you very much James! I’m gonna try the downgrade, and then if successful I would like to develop some GUI in Python or C# for plotting the data as in the Android App.

I am not sure, but is there any mooshimeter API protocol documentation? I mean, in order to avoid to dive into python code to learn how to send commands to the mooshimeter device? I’d like to take the plunge and help to develop a GUI or some app that integrates/exports data logs able to filter and analyse data into a PC.
I made use of this device in electrical installations and it is really helpful to detect problems related to noise, wiring isolation and earth defects with this little tool in pumping systems.