My question pertains to the sensor jammer. It reads when attacked you may change one of the attackers hit results to a focus result, the attacker can not roll the dice with the change result. So my question is if I used the sensor jammer and change one hit result to a focus result, if the attacker has a focus token can he change the focus result back to a hit result?

Yes. (at least 90% sure) Poe's ability would also work. (The Elite "Predator" would not work. Nor "Target Lock"