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18S User manual

Updating the Firmware

To update the firmware of your Dynaudio subwoofer, proceed as follows.

Firmware Update Prerequisites

  • USB drive with a maximum capacity of 8GB, formatted as a FAT32 drive. We recommend using an empty, low-capacity USB drive.

Firmware Update Procedure

  • Go to
  • Select your Dynaudio subwoofer.
  • Select “Firmware” to open the firmware download page for your subwoofer.
  • Download the firmware to your computer. This is a ZIP archive.
  • Unzip the ZIP archive.
  • Copy the “DYNAUDIO.bin” file to the root of the USB drive.
  • Turn off the subwoofer.
  • Plug in the USB drive.
  • Turn on the subwoofer.
  • The subwoofer should now detect the drive and install the firmware. The display will show the update progress.
  • When the installation is done, the display will read: “Update result: Success!”