Hi Brouno, I'm bringing back the old topic. From your picture, you are having the 2014-up model, The USB port is connected to the Bluetooth module. Unlike the 2013 model where our USB is connected directly to the head unit, I think this is the reason why you don't see the USB software numbers but it is still functioning. There is another tread in this forum discussing about the USB is not resuming playback in 2014 model, how is yours in the UK?
Coming back to the Commander switch functionality, I got an email replied from the audio head manufacturer, saying that they are only manufacturing the head unit for Mazda, Any question about the features and technical support should go back to the Mazda, and nothing much they could help me to swap the UK firmware into my head unit.
I think the last option is to get a head unit from EU country, which online stores in the UK are selling at nearly USD1800!!
Any better price shop?? From the UK members here?