Socom Ftb3 Help

ok so ive been out of the psp socom stuff for a while (my psp broke 6 months ago). recently ive been trying to get online on ftb3 and ive done the psnkiller and purchased the entitlement code but it still wont let me get on. do i NEED to use a USA version of the game? i still have the JAP one from before the US release. if somebody could give me a link to the usa one or help me get it working ill give them all my vbucks stuff.

it lets me sign in with my psn account and then it goes to some screen filled with Japanese with only a back option to return to the main lobby.

yea u need the US version if u got a US account its only common sense, an u google the cso cant be posted here