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Oberheim Matrix 1000 OS 1.16 EPROM Firmware Upgrade KIT / New ROM Update Chips

Kawai K5m OS 1.2 EPROM Firmware Upgrade KIT / New ROM Final Update Chip K5-m

Kawai K1r OS 1.4 EPROM Firmware Upgrade KIT / New ROM Final Update Chips K1-r

Kawai K1 OS version 1.5 EPROM Firmware Upgrade KIT / New ROM Final Update Chip