Hi @HeMan,
Sorry I am only seeing this now, I got in contact with Igor an he sent me the firmware update and yep it was the exact same firmware that was already installed on the Qubino meter below is an image of my settings on the meter after the update
I have contacted Igor asking what the newest firmware version should be but I still have not heard back from him. Unfortunately when I try to install my own device handler on the meter I am still receiving the 2104 cannot parse command. All I change on it is adding the voltage capability and updating the meter report command class so I can get voltage and it begins to malfunction. I will get readings for awhile but then the same cmd 2104 error in parsing.
Any luck on your side since?