> If you're looking for an upgrade so that your Poly MK1 has sysex functions > then you have two options.
Three. You can install an EX-800 ROM and switch it using the most sigificant adderess line. That is what I used on my old poly 800. But it is way boring to be switching to/from the original rom every time you need a sysex dump.
Cmon people, $99 is like free for a product like mike's one!