DDJ-FLX4 - map Crossfader FX Toggle to Smart Fader button

The Smart CFX button is still mapped in version 2.9 of the DDJ-FLX4 Unofficial MIDI Mapping. You can copy the settings from there.

In version 2.9

  • Smart CFX button was mapped to toggle FX2/FX3 on decks 1/2 (on/off).
  • this let you manually set FX2/FX3 and then toggle them on/off with the Smart CFX button

In version 3.0

  • Smart CFX is un-mapped/free