To change the favicon is pretty easy. In any of our Joomla templates, there is a option to upload and use custom favicon.
- First, go to
Extensions> templates - Click on the active template
- Go to teplate options, under the header section there is a option named Upload Favicon
- Click on the button and it'll allow you to upload your custom favicon.

- Click save button to save the settings like this.

It may take a little time to apply the new favicon on your site so, have patient.