T-MST12DEUC update.msd extracting

[tahamasterzenci31]

Guys im haline a problem with extracting update.msd file i want to extract some file from it like first boot animation, some İnternet browser widgets that i want to customize samsung apps widget to use when smart hub f***ks up and some classical "only İnternet browser note other apps including samsung apps!" Problem goes when i do downgrade is there any way to decrypt this file bekçisi any Chance in android?? İ use a rooted Phone dont worry anything can help