Can't watch sampler disk vol.1

[wissam]

When I insert my sampler vol1 psp disk all I get is the game videos, it includes also some music video clips and some movies but I can't see them, in my brother 2.5 psp original firmware it's working, how can I run it on my 3.90 m33???

inside the umd I used the "usb mod to see it":
PSP_GAME
UMD_AUDIO
UMD_VIDEO

those are the folders inside of it, his psp number is psp-1002

[wissam]

please reply.