We have escalated that behavior to the Engineering team since it is not working.
At this moment you can update the BIOS using the following methods. Desktop Boards — BIOS Update Instructions
Thanks a lot for the feedback.
Same with 0033 on D54250WYK.
At first I thought the error was because no DHCP server is present on the same network as NUC but now when I have such the error is still there.
Another error is if you disable "Update over Internet" in VisualBIOS settings and save the setting isnt stored. When entering BIOS after reboot the "Update over Internet" is still enabled... (while other settings do stick when you save them).