Game runs, but save states crash Retroarch. Solution: Delete your old save states. Save states created with a v1.50 BIOS are binary-incompatible with the v6.60 BIOS. Create new in-game saves or use Retroarch’s “Savestate” feature after switching BIOS.
This article will dissect why this specific BIOS file is superior, how to configure it for maximum results, and the precise steps to troubleshoot the infamous "missing BIOS" errors.
| BIOS File | Compatibility | Notable Issues | |-----------|--------------|----------------| | SCPH1001.BIN (original PU-18) | Moderate | Timing glitches, crashes in Spyro , Crash Bandicoot 3 , Legend of Dragoon . | | SCPH5500/5501/5502 | Good | Still has known audio stutter in Final Fantasy VIII , Metal Gear Solid codec glitches. | | SCPH7001 (later model) | Very Good | Improved, but some games like Ape Escape or Vagrant Story show slowdown. | | | Excellent (near 100%) | Fixes nearly all known game bugs. Works with libcrypt protection. Smooth framepacing. |
The psxonpsp660.bin file is the Sony PlayStation 1 BIOS firmware extracted from the Sony PSP (PlayStation Portable) emulator. Sony officially used this firmware to run classic PS1 games on the PSP. Psxonpsp660.bin Retroarch BETTER
Once you have the psxonpsp660.bin active, you can push Retroarch to be even by pairing the BIOS with specific core options.
This is a known POPS "watchdog timer" bug. Go to Quick Menu > Controls > Port 1 Controls > Device Type set to DualShock (not Standard ). Save a Core Remap.
Need help finding where to put your BIOS files? Tell me which device you're using (e.g., Miyoo Mini, Android, Windows) and I can give you the exact path. Game runs, but save states crash Retroarch
This file is not an original PS1 hardware dump. Instead, it is the official PlayStation ecosystem BIOS extracted directly from . Sony meticulously optimized this code to execute PS1 games through the PSP’s built-in hardware emulator (POPS).
: It acts as a universal BIOS, allowing you to run games from any region (NTSC-U, PAL, or NTSC-J) without needing separate files.
: Users report faster boot-up times and quicker saving/loading of game states. | | SCPH5500/5501/5502 | Good | Still has
: Some users report smoother gameplay, faster saving/loading, and reduced stuttering in certain titles.
To implement this file on PC, Android, or handheld consoles running RetroArch, use the following sequence: Sony - PlayStation (PCSX ReARMed)
: This is one of its most significant benefits. The original PlayStation BIOS (like scph1001.bin ) is region-locked. To play games from Japan, USA, and Europe, you'd typically need three different BIOS files, which the emulator then picks based on the ROM. psxonpsp660.bin , however, is completely region-free . A single file can play any PS1 game from any region without issue, simplifying your setup dramatically.