Hi Bakis,
concerning the Schaltwerk list, check Message #1481 posted by ripe.
"Please join the schaltwerk list to discuss the schaltwerk further
(newfeatures, code, etc) the schaltwerk list is here:
http://groups.yahoo.com/group/dOePfErsChALtwERk
"
I don´t think the A-190 update can be done by MIDI. This would be a really
comfortable way (and the cheapest, btw), but I rather suppose you´ll have to
change the Eeprom (the large chip with 28 legs on the upper side of the
large PCB). By the way, does anyone know which OS version is the recent one
My A-190 uses V1.4.