Hi akebsi Unfortunately you didn't give us enough info to help you :-) ! # '''Please tell us what you did, what you expected, what happened and your Android OS version and the model of your phone and which web sites are showing the problem''' # '''Based on the very small amount of info you provided, I guess you are looking at websites with flash video and the plugin you mentioned is a flash plugin. Am I right? If I am right, please try installing the flash plugin by following these instructions:''' https://support.mozilla.org/en-US/kb/how-do-i-watch-flash-videos-firefox-android