Re, ITV's (and others'), reportage that the recorders have "extensive damage", I don't think so.
The actual recorders in the two tubs appear in good shape as far as I can see. They look just like AF447's when those two recorders were retrieved. These reports may be referring to the two recorders' entire structure which, given the condition of retrieved wreckage etc., would not likely be intact; but the actual memory containers appear unharmed.