Update firmware on the Das Keyboard 4 Professional for Mac
Updating Your Das Keyboard 4 Professional for Mac's Firmware
Note: When performing these steps, please make sure that your DK4 Mac is the only board plugged into your computer. When updating, do not disconnect your board or any other USB devices. In the event of an update failure, please close the updater, unplug your board, and contact support.
Step 1. Download the following:
This file contains both the firmware updater and the newest firmware.
Step 2. Unzip the downloaded file. You will see three files:
- A2175V13.bin
- DKFW-HYKBUtility.app
- L2175V16.bin
Step 3. Double-click DKFW-HYKBUtility.app to run the program. If you receive a security warning, please refer to the steps at the end of this article to bypass it.
Step 4. The software will appear as shown below. Open the "Model" dropdown and select your board (the dropdown will likely say "Das Keyboard"; this is your board).
Step 5. Select "Get Firmware Version" to check your current firmware version. Note it in case you need to contact support.
Step 6. Finally, select "Firmware Update". This will open your file directory. Navigate to where you unzipped the folder in step 2. Within this folder, double-click "L2175V16.bin" to select the firmware upgrade.
Step 7. The upgrader will automatically begin the upgrade process. Please allow your board to sit for 5-10 minutes.
Step 8. Once complete, you can use your board as normal, with updated firmware!

If the Firmware Updater Shows a Security Warning:
Your Mac may display a security alert like this one:

If you see this security warning, you'll need to tell macOS to allow this application. Open System Settings, then select Privacy & Security. On older versions of macOS, open System Preferences, then select Security & Privacy.

Scroll to the security section and select "Open Anyway" as shown in the graphic below.

Once this is done, you can return to step 4 in the instructions above.
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