I just bought a DN2820FYKH and was able to install Windows 8.1 and all the drivers just fine. However, I'm not able to update the BIOS. If I run the express updater inside Windows, the computer reboots, then boots back into Windows, and gives me an error about not being able to update the BIOS.
If I boot into the EFI setup program, I am prompted to check for a BIOS update on the internet. If I do so, I get a message "Unable to locate product ID."
If I try to update the BIOS manually using the BIO file on a thumbdrive, the computer reboots and then boots normally into Windows.
I suspect the problem has something to do with this:
Is there any way to fix this, or do I need to RMA the system?