An order with volca sample firmware is a legacy one, if you switch that firmware to the link above you can also control it from the RK008. If you have setup the DUY page to use your MIDI interface and have a proper connection to the RK002 in loopback - then click on the link above it should show you the pop-in window with an upload button below. Click it and after completion it will show some parameters you can tweak. These parameters are then also accessible from the RK008 menu