gpSP 0.9 Signed Fix 3 is released. gpSP is the best GBA emulator released for the PSP with great compatibility and performance.

gpSP 0.9 Signed Fix 3 Changelog:
initial fix:
*fixed a bug that caused the emulator to crash when you exit without a loaded rom*
fix2:
*made a boo boo(real culprit is when it calls the function "sound_exit();" causing the crash)*
fix3:
*removed a useless help line "Brings up frameskip adjust bar and menu access." now it displays help accurately when setting up the buttons... added icons

Download: gpSP 0.9 Signed Fix 3
Source:Here