The file can be downloaded from the download section of the product page. https://www.paradigm.com/en/soundbars/pw-soundbar Please note: to install the software you must use a FAT32 formatted USB stick.1. Save the firmware zip file to your desktop2. Extract the file3. Copy the extracted .FW to a USB drive4. Safely remove the USB drive using the safe eject option in the taskbar tray5. Place the USB in the USB port labeled - MCU Update6. Enter the setup menu, scroll to USB Upgrade, then select Upgrade All from the list7. Once completed you can remove the USB drive.