Fried's analytic torsion conjecture for negatively curved manifolds

Let $(\Sigma,g)$ be a negatively curved oriented compact Riemannian manifold of dimension $n>2$, and let $\alpha$ be an acyclic unitary representation of $\pi_1(\Sigma)$. Let $\zeta_\alpha$ be the twisted dynamical zeta function and $T_\alpha(\Sigma)$ the analytic torsion. Fried's conjecture.

$$|\zeta_\alpha(0)|^{(-1)^{n-1}}=|T_\alpha(\Sigma)|^2.$$

The source says this was proved for constant negative curvature and conjectured for general negatively curved manifolds; the supplied text gives no later resolution.