Check GLB-12 [MIDI Program Change] → Receive is ON, then check the sending MIDI channel against GLB-8 → Global Channel. If the wrong program appears, inspect the configurable GLB-14 program number map.
Try these checks
- In GLB-12 [MIDI Program Change], set Receive to ON if you want external patch changes.
- With Omni OFF, send Program Change on the GLB-8 Global Channel.
- If it changes to a different patch, inspect GLB-14 [Prog No. Select Map] rather than assuming a fixed program-number mapping.
Diagnose it
Is GLB-12 Receive ON?
Yes: Check the MIDI channel and GLB-14 program map.
No: Enable Receive, then resend the Program Change.
What should happen
The mapped Prophecy program changes when a valid Program Change arrives.
Why this happens
Korg provides separate Program Change receive control and an editable external-to-internal program map.
If it still doesn’t work
Check the connections and settings described above. If your device behaves differently, email us with its model, firmware version and the steps you tried.
All Prophecy fixesMore about Prophecy
Similar symptoms on other gear
These guides cover other models. Use the instructions for the device you are setting up.
Sources & review
Sources reviewed: . Documentation does not replace a physical hardware test.
- Prophecy Parameter Guide · Korg · last checked 2026-09-26 · Open PDF
Sections reviewed: GLB-8, p. 139; GLB-12–14, pp. 143–144.