if you are useing GEN D3 then you should be able to start the umd but you wont be able to play online because D3 is all screwed up about connecting to the psn

if you are useing GEN lower than D3 then you will need an iso that is psn patched... pm me if this is your situation and i will give you the link for the iso that works on mine

m33 i dont know since i havent used it in awhile so follow his^^ advice

i use GEN D2 with an iso