Open a new window on our computer and navigate to your
downloads folder
(or where ever you have saved the firmware file named "D1_2017011602.rel")
Usually downloaded files automatically go to your
"Downloads" folder.
Copy the selected firmware to the Multiplex D1 (It'll appear like a removable USB memory stick), you can do this one of two ways:
- Right click on the firmware file and choose "Copy" from the right click menu (or select the file and press "CTRL+C" on your keyboard), then navigating to the device in your Explorer window - opening the device and pasting the firmware device by right clicking inside of the device window, and choosing "Paste" from the right click menu (or by pressing "CTRL+V").

- Dragging the firmware file from the folder is is currently sat in and placing it directly on top of the device to copy it directly into the device.
Now
eject your Multiplex D1 (appears as a USB memory stick) - You can do this by right clicking the device in "My Computer" and choosing eject - Make sure to leave the Multiplex D1 connected to your Laptop or Desktop PC until it has finished updating and has fully rebooted.
Once your Multiplex D1 has fully rebooted it will display "Welcome to digital radio" on its screen and you are now ready to use your Multiplex D1 as normal, the Firmware Update has been applied correctly.