OK, to progress I will start my own thread. I found this one using google matching on the VID and PID numbers.BTW, thank you for the welcome. 

I have purchased a cheap gadget which apparently does SWD (OpenOCD programmer). The SW pins are brought out to an edge connector. I have no idea if this will work, or even what the programmer can do. Although I have familiarity with many different mi...

Just to add to this topic.My friend gave me his NanoVNA, a ham radio RF device based on the STM32F072. I can't recall the conversation, but I think that he couldn't update the firmware.Well I tried it for the first time today, and I get USB connectiv...