I'm surprised I'm the only one who has actually tried this...When I plugged my H3-3D into my V1.1.1 with an upgrade board, it worked just fine. I didn't fly it, but on the bench all was fine. I have a P2 enclosure with the cutout/mounting and was going to transfer my V1.1.1 into it, but just ran out of patients waiting for the H3-3D to be sold as a standalone unit.