GR-20 Drivers e Atualizações GR-20 System Update Version 2.00 (PC) GR-20 System Update Version 2.00 (MAC) SMF Player for Mac OS X v10.7 / OS X v10.8 / OS X v10.9 About the UpdSMF UpdSMF is a simple SMF player that runs on Mac OS X v10.7 / OS X v10.8 / OS X v10.9. This SMF player is designed to be used only for updating, and cannot be used to play back conventional SMF music data. Before using this, you must first install a MIDI driver so that MIDI data can be transmitted. For the installation procedure, refer to the documentation for your driver or application. SMF Player for Windows