It is less prone to the "black screen" errors that plague certain PAL-to-NTSC conversions. Legal and Safety Considerations
The psxonpsp660.bin file is a dumped BIOS (Basic Input/Output System) image extracted from the PSP’s firmware version 6.60. psxonpsp660bin bios file
To use this BIOS effectively, it must meet specific criteria for the emulator to recognize it: It is less prone to the "black screen"
: Sony optimized this BIOS to run more efficiently on handheld hardware. It often provides better frame rates and smoother execution compared to original hardware BIOS versions. psxonpsp660bin bios file