I have tried all of the above for my brand-new/working Dunlop Volume (X) Mini DVP4 and HX Effects. The volume on the DVP4 works, but can't get expression/WAH to work.
Was running 3.11 for both firmware and HX edit; have now upgraded both to 3.15.
Regardless, I plugged my working guitar into the DVP4's Input jack, and the standard TS cable running out of the DVP4's Aux jack into the HX Effect EXP1 jack. As I just did the factory reset following 3.15 install, I am trying to sample the Teardrop 310 Wah that is the second patch in 01A Gtr Starter. I have attempted combinations of DVP4 BINs EXP and both TIP and RING with the H Effects' Global Settings > Pedals> EXP1 Polarity set to Invert and then back to Normal.
As a volume pedal, the DVP4 works fine. So frustrating not to get expression. I wrote to Dunlop; they responded right away -- suggested I try a TRS cable. I have put in a support ticket with Line 6 and hope to hear from them soon.
