If the zombie DLC loads with no bodies or heads:
Assuming you have acquired the necessary PKG files (let’s say you have RDR_Base.pkg, RDR_Fix.pkg, and RDR_Update_v108.pkg), follow this guide: red dead redemption pkg ps3 hen link
First, let’s clarify the technical landscape. Traditional PS3 Custom Firmware (CFW) (like Rebug or Evilnat) works on older, "phat" models and some early slims. It allows full kernel access. HEN is designed for Super Slim models and later Slims (CECH-30xx, 40xx) that cannot run CFW. If the zombie DLC loads with no bodies or heads:
Why do you need a PKG for Red Dead Redemption? Assuming you have acquired the necessary PKG files
Once you have obtained the correct PKG and RAP files, follow this guide exactly.
If you haven't installed HEN on your PS3, you'll need to do so: