How to add your own favicon and touch icon to a Theme Design
Login to the CMS.
In the tree menu on the left-hand side, go to 'Designs'.
Click on the 'Design' you wish to use.
Go to the 'Logo' tab.
Click on the media picker labeled 'Favicon'.
From the slide-out panel, navigate through your Media, select the correct logo image and click 'Submit' at the bottom-right. This can be .png, .jpg, or .svg file type.
In the bottom-right of your 'Design', click 'Save and publish'.