While PPSSPP can run many games without a BIOS file, having the official ppsspp.zip BIOS improves compatibility. You can dump this from your own PSP or find it legally via homebrew tools.

A: Disable "Fast Memory" in Settings -> System -> Fast Memory (Unstable) . Turn this OFF for God of War.

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on Android, you generally need a PS2 emulator like AetherSX2 . Download & Safety Tips