Ok i havnt stayed up to date on the psp scene for awhile so sorry abot my ignorence.
I sold my psp to my brother and it is now on 5.50 gen d3 but he bought the umd for nba 2k10 and it starts up and just stays at a black screen. it requires 5.55 so idk. is there anyway to get it to run. and ive tried changing the umd driver to normal and it still doesnt work