Faders not working - just bought new ddj flx4

Hello,

If you mean the crossfader bottom centre on the flx4 isn't working.

Locate the show mixer panel icon at the top of rekordbox and click it to show the mixer panel.

It will now show you the controls for eq and crossfader in rekordbox.

Locate the crossfader and on left side click 1 then on right side of the crossfader click 2.

I hope I read your question correctly.

You can manually backup settings file by locating rekordbox3.settings @

C:\Users\YOUR_USERNAME\AppData\Roaming\Pioneer\rekordbox6