You need the files within the folder containing scphxxxx.bin (where xxxx is the model number, e.g., scph70004.bin ). Phase 2: Installing the BIOS for PCSX2 (Standalone)
Which are you using? (PCSX2 standalone or a RetroArch core?) Are you running into a specific error message during setup? retromaniagg ps2 bios install
PCSX2 will show a path (usually Documents/PCSX2/bios or inside the program folder). Step 3: Installing the BIOS in PCSX2 Open the folder designated by PCSX2 as the BIOS directory . You need the files within the folder containing scphxxxx