Intel is no longer hosting the BIOS and driver files for the Intel Desktop Board products. Luckily, I have a backup of the last BIOS released, I have attached a ZIP file providing all of the pertinent files that will support installation via the F7, Windows EBU, DOS iFlash or BIOS Recovery methods. See the Release Notes PDF file for any information pertinent to this last BIOS release.
Hope this helps,
...S
