You can update the firmware for your EW-DX system using Sennheiser Control Cockpit.
Sennheiser Control Cockpit software is only available on Windows.
It can be downloaded from here
Once you have installed Control Cockpit and opened the software, navigate to the device tab at the top.
If your computer running Control Cockpit and your EW-DX EM 2 receiver are within the same network, you should be able to see them under the Device List in Control Cockpit.
If you are unable to see the receiver appearing in Control Cockpit, please make sure your computer is set to automatically assign IP (DHCP) and make sure the Network Mode on the receiver is set to “Auto”. This can be found in the Ethernet settings section on Windows.
Select the receiver in the device list to access the device Properties.
Under the “Properties” header you will see a series of tabs including Audio, Device, Network and RF Settings. Navigate to the Device tab.
Here you will see the device firmware info. You can select the drop-down menu to update to the latest firmware version. Select the latest version in this list to update via the server.
You will need to accept the license agreement before you can begin the update process.
You can also manually add a firmware file by selecting the “Add firmware file” option underneath update. From here, you can upload a local file. Firmware files can be downloaded from the product page for the device you need to update. They can be found in the downloads section under “Firmware updates”
EW-DX EM 2
EW-DX EM 2 Dante
EW-DX EM 4 Dante
Note: There are different firmware version for the EW-DX EM 2 and the Dante variants. Make sure you are downloading the correct update file from the site.
Press the Update button to begin the firmware update.
If you are presented with any warning messages, please check the box and click the blue Update button.
You will see a progress bar displayed as the firmware is updated.
Once the update is complete, the receiver will reboot. At this time, it is also suggested to stop running the Cockpit service and restart it.
To do so, right click and close the Control Cockpit from the task tray by selecting Stop running Service, then right click again to reopen by selecting Start service.
The firmware update should now be complete.