If favicon is located in '/app/static/img/favicon.ico', link it to {% block extrahead%} of this file: '/app/templates/admin/base_site.html'
{% extends "admin/base.html" %}
{% block title %}{{ title }} | {{ site_title|default:_('Django site admin') }}{% endblock %}
{% block extrahead %}
<link rel="icon" href="{{STATIC_URL}}img/favicon.ico" sizes="48x48" />
{% endblock %}
{% block branding %}
<h1 id="site-name"><a href="{% url 'admin:index' %}">{{ site_header|default:_('Django administration') }}</a></h1>
{% endblock %}
In settings.py INSTALLED_APPS, make sure your application is listed before django.contrib.admin.
, .pyc: "$ find. -name \" *. pyc\ "-delete".
Django 1.8.12 Firefox, Chrome.