Today I opened up the MkI that I bought last night to take a look around. Serial number is 038xxx, is that a relatively low/early number? I can see the spot on the main board where the backup battery would go, so it's a candidate for that mod. There is a sticker on the board with a handwritten Z0615084. The PROM has a sticker marked 830235. I'd like to know if it's the later firmware with the sysex update or not.
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Trying to date my MkI
2009-01-07 by Brian Rost