| Game Title | BIOS 5.00 (Old) | BIOS 6.60 (BETTER) | | :--- | :--- | :--- | | Tekken 6 | 45-50 FPS, audio crackling | , clean audio | | Kingdom Hearts: BBS | Crashes on final boss | 100% playable | | Syphon Filter: Logan's Shadow | Input lag at 2 frames | 0 input lag, V-sync ready | | Homebrew (Emulators) | Fails to launch | Flawless execution |

: It often skips the white Sony diamond logo, jumping straight to the black PlayStation screen, which contributes to the faster boot experience. How to Install for Better Results

Run any PS1 game. Open the RetroArch overlay (F1 on keyboard) and check:

Do not settle for outdated dumps. Find the official 6.60 BIOS, place it in your Retroarch system folder, and rediscover your PSP library the way it was meant to be played: perfectly.

: You can confirm it is working if you no longer see the "BIOS missing" warning when launching a game. gingerbeardman/PSX - GitHub 9 Aug 2024 —

If you want a "hassle-free" PS1 emulation experience on RetroArch, the PSXonPSP660.bin is the gold standard. It eliminates region errors, improves compatibility with the Beetle core, and streamlines your setup.