Homebrew developer Uberjack has released a maintenance update to fMSX, an MSX series emulator for the PSP that supports both MSX and MSX2 cartridge files.
Previous versions of the emulator contained two mislabeled configuration settings. In the updated release, both MSX Music and MSX Audio now correctly refer to FMPAC/YM2413 and Y8950, respectively. As such, the author notes that users should make sure that MSX Music is enabled if FMPAC-based titles were previously freezing.
Download fMSX PSP v3.5.2 for Custom Firmware / fMSX PSP v3.5.2 for Firmware 1.5
fMSX PSP [Uberjack]