hello ive got a icecrypt black i purchased that has joker 1.17 firmware on it,i need to have joker 0.80 on it is it possible to downgrade it,

and is it possible that the erase program from funcard can kill the cam
as im currently trying that but nothing seems to be happening and if i take the card out it just asks for card 1 to be reinserted

thanks for any answers