Absolutely. The psxonpsp660.bin is the magic key that turns your PSP into a portable PS1 powerhouse. By following this guide to download the "top" (safest and most compatible) version, you can play hundreds of classic RPGs and action games with near-perfect frame rates.
In the core options for or Beetle PSX , ensure the BIOS path is set to point to this file. Anbernic (RG35XX / ArkOS) : download psxonpsp660bin top
: The file is typically extracted from the official PSP 6.60 firmware update . You can often find it on developer repositories like gingerbeardman's GitHub . Absolutely