*Has to be .iso file (suggest for full one)
*Needs FB programs (extractor & builder for modding the maps inside packages folder, which includes npcstat there)
*ITAB and & XMLB. are also important instead of just ENGB
*Use UMDGen for completion
*Play it on Emulator (Jcpsp & PPSSPP) & Handheld PSP consoles (PSP & possibly Vita through Homebrew)
For me, it might take too long to do that mod.