Hi Poly fans, I fear we led our newcomer down the wrong path. Just poking around it looks like the MK-II does do sysex dumps. Go to our files section and fourth down on the list is datadumpreqst.syx . This is the sysex command you can use with most computer sequencer programs. Looks like you don't need to look for that ROM after all. Mike.
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But the MK-II DOES do MIDI sysex
2006-10-24 by korgpolyex800