Midi mode for the f1 is different from the S4. You can map functions to work along side the native map. But once you push shift+browse all those functions become only avail. in midi mode. The midi mode when activated toggles the F1 port between the user map and default(native) map. This does not happen with the s4 or any other controller that I am aware of. The software has to be restarted to use the usermap and default in conjunction.