It will not work for the B1 version I think for now, but I finally managed to get OpenWrt working on the DCS-930L A1 version. See Support for the D-Link DCS-930L Webcam for more details. I have two B1 versions as well, so will try to get those working too. The official firmware provided through OpenWrt is never going to work for an initial flash, the kernel is way too big unfortunately.