I tried to flash ROCK3 CM3 with instructions here https://wiki.radxa.com/Rock3/installusb-install-radxa-cm3-rpi-cm4-io. At first try everything was perfect. But when I connect CM3 module to HDMI, I did not see anything on the screen.
Then I tried to flash CM3 again with same instructions but now it says Test Device Fails. You can see the image below. What can be the reason for that?