ok i've been trying to a gta vcs cso on my psp fw 3.03 oe-c but all i get is a black sreen when it starts up. i can still press home and exit. i tried the following things: disabled no umd mode advance config settings are disabled. demcompiled an rebuilt cso with VcdromX 3.6a. reflashed the firmware. set different cpu speeds. get cso/iso from different source. and converting it to iso. but none has made a change. has anyone got advice or know what to do? thanks.