Doing a full file replace caused the game to not boot at all (with an error 80029530), but restoring the original EBOOT file from the JP PKG allowed it to at least start up. I got the initial chainsaw loading animation, but then a system message popped up (in English) to let me know that the...
I've found a tool that lets me extract the contents of a PSN Store PKG file (PSN.PKG.Decryptor.&.Extractor.v1.85-LMAN), but I'm wondering if there are any tools for re-packing the files back into an installable PKG.
I've used the CFW2OFW Helper to turn some of my disc games into PKGs, but that...