Login as admin. Go to "Site administration > Plugins > Plugins overview". Verify there is no longer a mention of 'Flash animation' (media_swf). Access to "Site administration > Plugins > Media players > Manage media players". Verify there is no longer a mention of 'Flash animation'. Go to "Site administration > Reports > Security checks". Verify the "Enabled .swf media filter" check is not displayed anymore. Access to "Site administration > Server > File types". Check "swf" and "swfl" extensions have the "Type groups" column empty. Access to http://yourmoodleurl/filter/mediaplugin/dev/perftest.php Check no errors are displayed.