PSP Downgrader for firmware v3.03 OUT!!!

AND I STILL CAN'T DOWNGRADE.

why?

I DON'T HAVE THE GTA LIBERTY CITY STORIES UMD!!! !@#$$%^^&&&*((^%$$

PLEASE TELL ME IF YOU HAVE THE GTA LIBERTY CITY STORIES UMD... I JUST NEED TO BORROW IT THAT'S ALL!!!

T.T