Riding a Hades Canyon 8i7HNKQC here.
Intel Driver & Support Assistants reports one update: BIOS. Pressing "Download" then "Install" buttons brings me to a dialog with a "Restart and Install BIOS" (and a "Cancel") button. Pressing "Restart and Install BIOS" restarts the device which goes ahead with booting Windows 10 without entering the actual upgrade phase. Downloading and running "HNKBLi70.86A.0061.EB.msi" does the same (reboots without doing the actual upgrade). Intel Driver & Support Assistants keeps reporting the new BIOS version to upgrade to (and acting on the notification invariably gives the same result described above).
(Looking at issues here with upgrading to the same BIOS version, it seems I can consider myself lucky not being stuck with a bricked device.)
C:\WINDOWS\system32>wmic diskdrive get model,name,serialnumber Model Name SerialNumber INTEL SSDPEKKW512G8 \\.\PHYSICALDRIVE0 0000_0000_0100_0000_E4D2_5C6A_E1F0_4F01.
That's an Intel 760p. You would think that they would at least test with their own drives before releasing the BIOS for automatic installation...sigh!
Yep, the NUC itself is actually listed on Intels "product catalogue" (as "Hades Canyon Business" AFAIR) -- I've upgraded the RAMs to 32GB, though.
I've upgraded my NUC8i7HVK with Intel SSD 760P 1TB SSDPEKKW010T8 to BIOS version 0061, without any problems. However, I did this with HN0061.BIO file, using BIOS recovery method from Power Button Menu (F4).