I have an ASUS P9X79 Deluxe. I cannot get the ASUS USB BIOS Flashback to work. I push the USB Flashback button and release when the light starts to flash. Light flashes 3 times and then the LED on the button stays solid. No activity on the USB drive. I have tried the following: Format a 16G and 8GB USB stick to NTFS and FAT32 respectively BIOS file is named to P9X79D.CAP Put P9X79D.CAP file on USB stick No other files present on USB stick BIOS file on USB stick is a different version than on the board Insert USB into white USB Flashback port Push button and release when light begins to flash My reason for doing this method versus using UEFI to upgrade the BIOS is to install a modded version of the latest BIOS to allow a NVMe SSD to boot when using a PCIe 3.0 x4 Adapter. Please tell me what I'm missing. I remember in the past being able to upgrade my BIOS in this way, so I know it's possible.