The process of downloading the Sound Devices 688 Field Mixer Firmware 4.00 driver should begin automatically after a few seconds. If this does not occur, click on one of the links below (we recommend downloading the Sound Devices 688 Field Mixer Firmware 4.00 driver from the primary server - this is the manufacturer’s Sound Devices 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 Sound Devices 688 Field Mixer Firmware 4.00 diver.