Gaming Hatsune Miku Project Diva 2nd Problem

[SilentRevolt]

Problem: i've just finish downloading Project Diva 2nd and put it in the psp iso folder.
turn on my psp and i tried to find the game,its not there with my other games.
i am sure the file its not hidden,is it a bad iso or something?

can someone please help me again XD,my psp firmware is 5.50 prometheus.

THANK YOU.

and sorry if i have any grammar mistake.

 

[prowler]

Rename the ISO to something shorter.
Mine is "Hatsune Miku-Project D1V4 2nd [JPN]"