If you feel the question merits interest, in that it drew your attention, then it's inherently a worthwhile question (if only to you and the person who initially asked it). As it's a worthwhile question it's also deserving of care and attention.
The age of the question might may, potentially, make the subject-matter somewhat historical (an older version of an IDE, reference to a now low-use browser), and, of course, the original poster may no longer use the site (though you can tell that from the greyed-out avatar on the question itself), so there may be no 'accept' points rewarded for providing an answer, however the edits will promote the question, and there may yet be up-votes to reward the answerers.
It's worth remembering that that while editing might raise awareness of the question, it might also prompt others to close the question (the criteria for a 'good question' have changed over the years from 2009 to 2013). This does not, however, reflect badly on your edits (any help you can give a question is worthwhile to my mind), but on the nature of the question itself.