sorry for not getting back to you on this question sooner. I forwarded your question to the UMG software engineering team, who may be better able than the software development tools folks to address your video bios question.
I have been advised that you will need to submit this issue to the IEDG team at UMG. You should have access to the relevant Z5xx product category at https://premier.intel.com (Intel Premier Support). Please resubmit your issue there.