If you know the new answer:

• Then edit the current answer, so say way it is out of date (just add one line at the top)
• And add your own answer

Then let other people do the voting.

However if you don't know the currect answer, ask a new quesions making it very clear you have read the old quesions and why you consider a new question is needed.

If you know the new answer:

• Then edit the current answer, so say way it is out of date (just add one line at the top)
• And add your own answer

Then let other people do the voting.

However if you don't know the correct answer, ask a new question, making it very clear you have read the old question(s), and why you consider a new question is needed.