Hi,
This is a late reply. Not sure if you still have the card. ☺
I use the CD that came with the card to “reset” downgrade the firmware on a new build machine. (Windows 7/10 64 bit)
Then, I install Desktop Video 10.11.4. It will prompt for firmware update. It completed successfully.
I update to the latest Desktop Video afterwards.
Hope this help.
Note: If the upgrade freeze on your machine, you may upgrade firmware on other machine. Then, you install the intensity pro card back to your original machine. Also, try with different PCIE slot.
Regards,
Michael