Consider a biased random walk in positive random conductances on Z^d in dimension 5 and above. In the sub-ballistic regime, Fribergh and Kious (2018) proved the convergence, under the annealed law, of the properly rescaled random walk towards a Fractional Kinetics. I will explain that a quenched equivalent of this theorem is true and a strategy to simplify the question. This is joint work with A. Fribergh and T. Lions