Note 2: USE IDC to install the Jap voice DLC successfully : Here

• Use E3 ODE
• Use this tutorial to convert the pkg (jap voice DLC) to iso (Download), then transfer the iso to ur ext. hdd and install it to ur ps3
• After that, install the dlc fix.pkg (i installed it using e3-pkg installer)

[Quote from noctis99 , thank :”) ]