The process of downloading the Sony KDL-40NX723 BRAVIA HDTV Firmware 4.005GAB driver should begin automatically after a few seconds. If this does not occur, click on one of the links below (we recommend downloading the Sony KDL-40NX723 BRAVIA HDTV Firmware 4.005GAB driver from the primary server - this is the manufacturer’s Sony official website). If the download still fails to run, check whether your anti-virus software is not blocking the connection to the manufacturer server of the Sony KDL-40NX723 BRAVIA HDTV Firmware 4.005GAB diver.