RD-150 Oppdateringer og Drivere RD-150 System Update v1.02 (MAC - SMF) This is the Macintosh version of the latest operating system for your RD-150. Please refer to the readme document for the update procedure. Note to Mac Users: You will need the UPD SMF Update Application if you do not have access to a sequencer program. RD-150 System Update v1.02 (PC - SMF) This is the PC version of the latest operating system for your RD-150. Please refer to the readme document for the update procedure. Note to PC users: You will need the PC SMF Update Application if you do not have access to a sequencer program.