first sorry for my english

when using a receiver (edision 1600 ci firmware globo-truman witch k*ys)...
i need erase all receiver k*ys to use reborn? or...i need reflash the receiver witch original firm (or any firm witchout k*ys)?

another...

i can save k*ys in smartcard to use in reborn? or...need reflash reborn when any key change (dont like use remote control to edit k*ys)?

heeeelp!!!
thaaaaanks!