Can you control Amazon Fire TV Sticks or Cube with the LG Magic Remote? Yes, just follow steps below.
First, go to your Fire TV setting Display and Sounds, then scroll down HDMI CEC Device Control and make sure that it’s On. Now using your Magic Remote, select Home, then go to Device Connector. Choose Other Box, make sure the HDMI connection is the one connected to your Fire TV device, then click on Done.
That’s it! Now you should be able to use your LG Magic Remote as a universal remote to control your Fire TV device.