psx2psp 1.4.2 is a version of the open-source tool that converts/distributes PlayStation 1 (PS1/PSX) games to an executable format runnable on the PlayStation Portable (PSP). It typically handles ISO/IMG/BIN game images, performs graphics and audio conversions, applies compatibility patches, and packages the result as an EBOOT.PBP for PSP.
The PSP’s internal PS1 emulator (POPS) was updated through firmware. Some games require specific versions. Advanced users can: psx2psp 1.4.2