I found out why the emulator didn't work I was using a old version of the uLaunchELF.
But anyways I still can't launch uLaunchELF it just resets the whole PS2. It worked before. I delete boot.elf from the INSTALL folder in my USB Flash Drive.
EDIT: That is weird I can launch uLaunchELF if I take out my USB flash Drive out of the PS2 but if its inside when I launch uLunachELF it restarts my PS2.