It is literally a brand new, 3-day old Pi 400, full OS reinstalled today. I did get confused about the required libraries as I didn’t realise I needed to download and install all of those zips and git repos, but it is clean. I guess at least one issue is that I cannot update the RTL firmware on the Wio Terminal right now, but that should be separate from the compilation of the sketch. Either way, I guess there’s no working MQTT example, which is a shame. Unfortunately that’s my weekend experimentation time gone so I guess I’ll move on to another thing.