I am afraid it's still dying. The lowest of the two aerial roots has started to get black from the stem and is likely to be gone in a day or two. After that the only root left is the single aerial root which is just under the leaves and looks fine for now.
I there anything else I can try before it's really too late? I haven't seen any new roots at all since July 7 (the only time I checked though was July 12).