Reset X4 BIOS to default

Hi there,
I was trying to get older OS to boot so I enabled CSM and few other options (don’t remember which one). Now I don’t have any display output and can’t see any post messages or radxa logo.
How can i restore BIOS to defaults?

Just remove the power and RTC battery for 30s, BIOS setting will clear

Thanks, that did the trick, first time I didn’t wait that long :slight_smile: