No bios visible?

I have an orion o6 I received from a hackathon, was trying to install a different OS, but I can’t get into BIOS. When I hit escape the light turns blue indicating it’s there. but there’s no output to screen. Can I update the bios without entering it somehow?

The early bios might have display capability issue, you can update the BIOS with serial console. Refer:

Update BIOS Firmware | Radxa Docs