Jump directly to the solution
Favicon not updating in Genesis Framework WordPress site? Having just updated the theme from a custom Child theme to a more ‘normal’ looking theme (prompted by a partners comment about the janky look of the old theme – that used Dynamik Website Builder and the custom Genesis Framework child Theme Wild-Country), I found the same issue.
I tried the standard way for Genesis which is to replace the Favicon.ico file in the Plugin directory:
But it didn’t work and this was after flushing the cache using the Firefox plugin ‘Clear Cache’ V 2.0.1 (the only one I found that actually works).
I also updated the Favicon in the /skin_main/images/ folder.
And I tried using Favicon.png’s as has been suggested for Genesis, and a number of other Favicon plugins but to no avail.
‘Genesis Favicon uploader’: ~4 year old WordPress plugin (I tried deactivating and deleting it and the Favicon no longer shows if you do that):