Return RPi running Volumio 3 to factory settings

I need to clean off my RPi so I can install a different software to test. Trying to load a different software, Moode in this case, is not successful. It still wants to run Volumio.
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just take the MoOde image and burn it with Etcher or raspberry Pi Imager to the SD.

Did that, many times w/different Micro SD cards. With MoOde SD in RPi still get Volumio.

To be honest this seems technical impossible. As the rPi runs from the SD-card. Please open a topic at MoOde.