This means BT is not up and operational. We just put this image out even few things are not fully operational since it can be used for most cases. BT will eventually be solved, but it's functioning is not our top priority. Unfortunately. This is the case on other boards as well. This comes usually when we have nothing else to do or somebody just provides a fix for it. I thought it was.
Unfortunately, 4.14 has for sure broken and afaik also up.
The current image is probably the best whats out there for this board.