I have two O6Ns one works like a charm, the other is not giving any meaningful signs of life.
Serial and HDMI/DP work on the “good” one but I get none of it on the “bad“ one. I tried plugging an usb with the latest bios (fat32) but still nothing. I’m at a loss at what I can do to make this board boot.
I’m using the provided power supply. Once I connect to power the LED lights up green and the fan spins full force.
Please be aware that the link you mentioned points to the O6 firmware.
This link points to the O6N firmware: https://dl.radxa.com/orion/o6n/images/bios/orion-o6n-bios-1.1.0-2.zip
If the O6N board still cannot boot up after the correct firmware is flashed, I think you can try to contact the customer support of the distributor.