SD-1 OS Upgrade 2003-11-21 by Robert Cleere I have an Ensoniq SD-1 with the following ... ROM v 3.00KP V 232 Do I have to replace the ROM to upgrade the OS? I have the 4.10 OS floppy. If I need the ROM (EEPROM), anyone know where I can get the HEX file to burn the EPROM myself? thanks!