Korg EX 800 sysex msg / dumb

[tedsorvino]

Hi everyone
I recently found a good old Korg EX 800. It has fullmidi sysex implementation etc (unlike the first Korg Poly 800) and it’s similar to the Korg Poly 800 ii on the midi front.
Apparently capable.

My question is if somebody has acheived any midi sysex dump (to and from a computer) and if somebody has figured out how the sysex messages for parameter data change work on that machine.
The manual ia really confusing on the data change subject (with a key map etc) and not clear at all about sysex dumb.

Thank in advance.