Couple of hours work later, I think I’ve figured out a lot of sysex packets by using a sort of “man in the middle” approach over serial MIDI and recording what H9 Control sends and receives. I can duplicate the sysex “want” packets from the browser and all the pedals reply with … something. I’ll keep plugging away and find out how to decipher these responses. Bome MIDI Translator Pro was a big help here but it took me back to the bad old days of MIDI cable spaghetti. Back to good old USB MIDI now and everything’s a lot easier but any pointers in deciphering the sysex responses would be great.