The process of downloading the Sony BDP-S4200 Blu-Ray Player Firmware M20.R.0071 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 BDP-S4200 Blu-Ray Player Firmware M20.R.0071 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 BDP-S4200 Blu-Ray Player Firmware M20.R.0071 diver.