Intel is no longer serving BIOS updates for at least one product that was released 16 years ago and
last manufactured 15 years(!) ago. You've had 15 years to make copies of the BIOS files for your needs, and you can still use the original BIOS on your device.
Headline is fully substantiated and I also see that 1151 support (as in boards made just a few years ago) are having their BIOS/UEFI downloads nixed as well. I just tried updating my board with my 7th gen i3. No downloads when I knew one existed before (I refused to get it because everything currently just works.)
Intel is no longer serving BIOS updates for at least one product that was released 16 years ago and last manufactured 15 years(!) ago. You've had 15 years to make copies of the BIOS files for your needs, and you can still use the original BIOS on your device.
Nothing to see here.