If your emulator still gives you trouble, verify the file with an MD5 checker to ensure it hasn't been corrupted during download. gingerbeardman/PSX - GitHub
It seems you're looking for information about a file named in the context of Archive.org and emulation. psxonpsp660bin archiveorg best
: Because it was designed for the PSP's hardware-constrained environment, it is more efficient than original SCPH bios files. It omits unnecessary features like the PS1 CD Player and Memory Card manager to speed up boot times. Region-Free If your emulator still gives you trouble, verify