oscam problem neutrino image

hi all, i'm a new guy here and linux box. i tried a neutrino imax fo my box but i have some problem with powervu channel.
the original oscam from neutrino in not fix with powervu chanel, when i change it with a new one, it can not read by the box, i mean the oscam is not work.
my question is: which oscam that work on powervu chanel for neutrino?
and where we have to put it?