Go on to the next step while it’s starting. When you boot it, it will show a lot of scrolling text and take a while. I recommend putting a piece of tape on your MicroSD Card so you can easily pull it out of your MINDSTORMS EV3 brick again. Insert your micro SD card into the SD card slot on the EV3 Brick and turn it on.It will ask for an admin password because it needs low level access to your SD card. Download the EV3 MicroPython image from LEGO Education.I believe a Class 4 8GB would work too, but it’s slower. How to run MicroPython and Python on LEGO MINDSTORMS EV3