I have an SMF 2.0.15 forum and i want to add a favicon.

But it doesn't appear. Any idea?
where is your favicon located? usually your browser will pick it up automatically and not require any code changes.
The favicon is here
the favicon has to go in the same folder that has your Settings.php file. move it there and in time it should show up.
Add to here:

I need to modify the settings.php or not?
I did not say to modify that file, I just the favicon has to be in that folder.
Yeah, i know but it doesn't appear after the change neither
it will take sometime for your browser to see the new icon.