I cannot disable quiet boot

[s.kyratzis]

Hello,

I own a opnsense DEC700 Series Appliance. By mistake I enabled quiet boot from BIOS. Now every time I power on the appliance I cannot access BIOS. I press ESC key at startup and it shows a message "ESC key is pressed. Go to boot options." but after 2 secs it boots to opnsense. Can you help me disable it in order to access BIOS ? Thank you.