dont know if you can. but if you can... DO NOT!!
darkcorp installs cIOS to many different IOS which is NOT needed (and may cause issues with other hacks depending on the individual setup). just install d2x following a guide provided here at gbatemp. use a usbloader (preferably wiiflow lol) and load your games from a hard drive. (cost a bit more upfront, hard drive cost, but the experience is better)
disc loading seems like the better option for the new user (ill only play a few games), but after the usbloader experience there is no turning back (now i want to play all games).
edit//
its been awhile since i followed darkcorp talk... but anyway just dont do it, there are many different versions of cIOSCORP/darckcorp which install different IOS and may cause problems (even more than hack issues) really i dont know the recent problems, only know that its not worth it, use a usbloader and its easy peasy lol