the MIOSv10 from ModMii is the same as the one from NUS servers. If you are comparing 2 wads packed by 2 different programs, of course they will be different, but if u unpack the wad the contents will be the same. So basically, if u download a wad from program A, it will have a different hash than if u downloaded it from program B. But both wads contain the same files, and installing either wad will have the exact same effect on the Wii. So yes, ModMii's installed MIOS will work for DIOS MIOS (assuming u do everything else necessary to build dios mios). Why do u need to install BC to the emulated nand? What you described is how u would install wads to the emulated nand, except after dragging and dropping into the showmiinand window, u need to click the "install" at the very bottom of the window.