From Antony Balcerzak via Analogue Heaven:
Programs Dump Request(all pgms only):
F0 42 21 01 10 F7 (240 66 33 1 16 247)
You will then get:
F0 42 21 01 (3269 bytes of data) F7
Use the same message to send back.
(I should add that you can choose pgms only,sequencer only, or both by the respective enable/disable switches on the back, at least when using tape. I can't vouch for this on the sysex.You'll have to try it. Good luck.mn)