In the chaotic pre-HENkaku era (and the immediate post-eCFW era), running PSP games on a Vita required exploiting specific vulnerabilities in demo games or exploiting the PS Mobile runtime. The interface you saw wasn't the native Vita OS; it was a Custom Firmware (CFW) menu running inside the PSP emulator.
: MAME and Final Burn Alpha (FBA) are now merged into a single "Arcade" playlist. Optimized Performance
that mask the aspect ratio gaps on the Vita's 5-inch OLED/LCD screen, making old 4:3 games feel native to the hardware. Why It Matters
It looks like the string you’ve provided — — doesn’t correspond to any known official software, hardware, or recognized project title as of my current knowledge (and post-training cutoff).
