Darkcorp was used to patch all the IOS to add the trucha bug and allow burned disc launched directly from disc channel.
If what he wants is to launch backups, he doesn't need any patch in neek. but not in burned disc format, he needs either a retail disc or a modchip or extracted games on FAT32 partition.
he mentioned that homebrew don't work well with patched IOS, he should keep then unpatched, either from RealNAND or EmuNAND.
It all depends what he really wants to do and how he wants to launch its games.
Discs are not the most used method since USB can be used.