We have been working with the FLIRC team to make Channels for Android TV remote control mappings more accessible via the FLIRC app:
Previously these keys were documented only in random posts and required command-line invocations. Now you can program them easily all at once directly from the FLIRC gui.
This new functionality is currently available via a beta build, and we're looking for FLIRC users here with various types of Android TV devices to help us test things out. Download using the links below, and then share your experiences on this thread. Make sure to include what Android/FireTV device you're using, and which keys (if any) are not working as expected.