The is the "holy grail" of PlayStation 1 (PSX) BIOS files for emulation. It isn't just another system file; it’s a piece of software Sony highly optimized for the PlayStation Portable (PSP) to ensure its PS1 classics ran perfectly. Here is how using it makes your emulation story better: Why It’s the Best Choice
Games like Metal Gear Solid and Final Fantasy IX require disc swapping. Older POPS versions (especially 3.40) would crash when trying to access the "Change Disc" menu. Version 6.60 refined the popstation logic, allowing for seamless disc swapping without freezing the XMB (XrossMediaBar). psxonpsp660bin better