Documentation and download are available at http://lejos.sourceforge.net/links.html. leJOS is the popular Java-based firmware for the first generation Lego Mindstorms RCX brick. This will be the final release of the firmware, and no surprise considering the recent release of the Lego Mindstorms NXT. So far as I tested, it is now compatible with Java 5.0. leJOS has been a blessing for me over the years. It was a part of my senior design project in college. I know many academics institutions still use it in programming and robotics classes. My thanks to the group’s work over the years.