The AXON MK II Update will give you a software editor for PC and MAC, new soundboard with more than 500 sounds (GM and XG-sound compatible), 10 drum kits, one SFX kit and an improved new firmware on a changeable EPROM. Attention: The AXON MKII Update consists of an EPROM and a Wavetable which have to build into the AXON MKI. TerraTec strongly recommends to consult a technician or use professional equipment. TerraTec is not responsible for any damage caused during the installation of the AXON MKII Update.