AMD released an official video-card BIOS update for the Radeon R9 Fury X and Radeon R9 Nano graphics cards, which improve UEFI BIOS support. End users on our forums are also reporting improved overclocking stability. UEFI support at the video-BIOS level is required for the card to run without CSM at the system-BIOS end, in turn enabling useful OS features such as Secure Boot. Several of AMD's add-in board (AIB) partners already ship their cards with UEFI-ready BIOS. AMD is distributing the BIOS as ROM images, and it takes thorough knowledge of how to flash your graphics card's BIOS, to make use of these ROM images.DOWNLOAD: AMD Video BIOS Update for Radeon R9 Nano | Radeon R9 Fury X | From AMD Website