Korg Poly800/EX800 Users

Hello all,

I just joined the group, lots of interesting and valuable stuff
here.  I am an original owner of the first generation Poly-800 that I
bought back in 1984.  This is the one that does NOT have the MIDI
System Exclusive function.  But I still use it along with my other
vintage synth equipment in my 80's cover band.  Anyway, after getting
the dreaded "H5" display and suffering with an old cassette player that
no longer rewinds (although my old Bic pen still works for that), I did
some searching online and discovered that apparently there was a ROM
Upgrade that came out that allowed the original Poly-800 to send and
receive SysEx signals.  I think this was before the Poly-800 mkII was
released.  I looked through the files and messages here in the group,
but I didn't find anything specifally about this upgrade.  Does
anybody have any information on it?  Thanks!

Greg C.