MacOS X install instructions for JMRI series 4 releases. If you want to install a JMRI series 4 release, such as These directions are for installing the latestĤ.99 and 5.0 releases of JMRI® on current macOS computers. Debugging an installation Supported Hardware Devices, command stations, networks, and protocols:.Download and install JMRI® JMRI Setup and Installation JMRI environments.
