Preparing the firmware update

Only the firmware is updated, the device settings remain the same.

To prepare the firmware update:
  1. Switch on all receivers and transmitters.
    Switched-off devices will be ignored during update.
  2. Click on “Applications” > “Firmware Update”.

    If there is a new firmware version available in the “New Releases” folder of the program folder, it is displayed in the “The selected firmware package is:” field.

    You can select a firmware package (SENNPKG file) for your Sennheiser devices.

To use the firmware version from the “New Releases” folder:
  1. Click on “Next >”.
    The connection to the devices is checked.
To use another version:
  1. Click on “Choose...”.
  2. Select the desired SENNPKG file.
  3. Click on “Next >”.
    The connection to the devices is checked.

    The “Firmware package” box on the right displays all available firmware versions from the selected SENNPKG file. The “Connected devices” box on the left displays the corresponding connected devices.

    Devices with an older firmware version are automatically ticked.

To not update the firmware in a device:
  1. In the “Connected devices” window, click on the check box of the device.
    The tick is removed. The firmware is not updated.
If you want to transmit an older firmware version to a device:
  1. Click on the “Allow downgrade” check box.
    A tick appears.
  2. In the left column, click on the check box of the device.
    A tick appears. The older firmware version will be transmitted to the devices during firmware update.
    Portable Sennheiser transmitters (see Compatible Sennheiser products) can be updated via their associated receivers (via the infrared interface).
To start the firmware update:
Updating EW-DX to version 4.0:
  • The update cannot be undone.
  • After the update, an authentification of the devices is neccessary.
  • Legacy Mode has to be activated, if communicating via SSCv1 is used.
  • Third-party access via SSCv2 must be configured.


  1. Click on “Start”.
  2. Follow the instructions of the wizard.
Dante firmware update
The firmware of the Dante modules is updated using the "Dante Controller" software.
  1. Download the software audinate.com/dante-controller.
  2. Follow the instructions in the software.