Got a new AirGradient DIY Pro pre-soldered kit, it comes with firmware pre-flashed.
The screen says to press the button to enter menu. You need to press and hold, not just press, but whatever.
Once you enter that menu, you can press the button again to cycle through the settings. But then what? How do I save the selected config and exit the menu?
Long-pressing the button does nothing. Double-pressing does nothing. Simply powering the device off and then on does nothing. The config does not change to the desired selection. I just want to see PM2.5 in ug.