LG TV Global on Facebook says they do not care Magic remote not working with Roku.
We appreciate your viewpoint, Alan. However, in this situation, since you are trying to use the magic remote designed for your LG TV with the Roku external device, we recommend reaching out to Roku directly to determine if their device is compatible with the IR transmission of an LG magic remote. Please understand that the magic remote is specifically intended to work with our products, and we cannot verify compatibility with other brands in this regard. We hope this information is helpful to you. Should you have any other concerns feel free to let us know anytime.
It worked for the Last three years who care if it is broken, not LG TV.