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                                    Firmware Update of the DBS1
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The DBS1 contains two central chips: The Dante® Ultimo chip and a controller chip by Four Audio. 
Therefore, the update requires multiple steps. The first step is a preparatory update for the Ultimo chip. 
Then, update the DBS1 controller chip and finally install the latest Ultimo firmware. 
To update the Dante® Ultimo firmware, third party software from Audinate has to be used. 

To update the DBS1 firmware, follow the instructions below. 
For further information please check the DBS1 user manual.

Make sure you have a reliable power supply and network connection. 

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If your firmware version is lower than 2.2.3.1, then you need to follow the elaborate instructions as below.
Otherwise, you can simply upgrade the DBS1 Ultimo firmware using the Firmware Update tool within the Dante Controller.
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If your firmware version is lower than 2.2.3.1:
Do NOT just update the Dante® Ultimo firmware without also updating the Four Audio firmware, 
as this will lead to malfunction.



1. Preparing the update: Download files and install neccessary software

DBS1 Software and firmware

Download and install the latest DBS1 Software from http://four-audio.com/en/downloads.html. 
Download the latest set of firmware files http://four-audio.com/data/latest_dbs_firmware.php and unzip it: 
- DBS1_ult-preparatory.dnt     (preparatory firmware for Dante® Ultimo chip)
- DBS1_<version>.fwu           (firmware for Four Audio Controller chip)
- DBS1_ult-<version>.dnt       (firmware for Dante® Ultimo chip)
- README.txt                   (these update instructions)

Dante® Firmware Update Manager
Download and install the latest Dante® Firmware Update Manager from Audinate.
https://www.audinate.com/products/firmware-update-manager

Dante® Controller
Download and install the Dante® Controller. 
You’ll find it under https://www.audinate.com/products/software/dante-controller 

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| It is strictly recommended to disconnect audio output or turn off connected |
| devices during the update procedure because loud click noise can occur!     |
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2. Performing the preparatory Ultimo update for old Dante Software versions

Because of major changes in the Ultimo and Four Audio Controller firmware, 
a preparatory Ultimo firmware update is required if the Ultimo firmware is lower than 2.2.3.1.
Open the Dante® Firmware Update Manager, select your network, and then choose Update Dante Firmware. 
Load the DBS1_ult-preparatory.dnt firmware file. The Update Manager will scan for connected DBS1 devices.
If the displayed Ultimo Software Version of your device is lower than 2.2.3.1, 
you need the preparatory update (otherwise skip this step and go to 3). 
Select the device and click Start in order to upgrade to the preparatory Ultimo software. 
Restart the DBS1.

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| After the update, the Ultimo Software Version will be 2.0.0.9.              |
| Even if it was the same number before, the update has worked.               | 
| Inside the Dante Controller, you can verify that the                        | 
| Device Firmware Version has changed to 15.11.5.                             | 
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3. DBS1 controller firmware update
Start the Four Audio DBS1 software. If you have several network cards installed in your computer, 
choose the correct network interface. 
In the list displaying the DBS1 units found in the network select the device that is to be updated.
The status bar shows the version of the Four Audio Controller Firmware. If the FW: 5b08 is shown, skip the update.
Now go to Device => Firmware Update browse to DBS1_<version>.fwu. 
Open starts the firmware update. During the update process, you can hear relays clicking inside the DBS1.
After closing the Update dialog and pressing 'Refresh' the status bar shows the new firmware version.


4. Final Ultimo Update
Update the Ultimo chip with Dante® Firmware Update Manager to version DBS1_ult-<version>.dnt.
Congratulations, your DBS1 is up-to-date now.
In Dante® Controller you can verify that your device is running with the latest Firmware versions now.

5. In case of trouble read the chapter 'Troubleshooting and FAQ' in the DBS1 user manual.