Make FireFox Addons Compatible

Hello, in this tutorial I'll explain how you make old firefox addons compatible with newer versions of FireFox.-Step 1-Search the addon you want onhttps://addons.mozilla.org/firefox/Pick the addon you want, for this tutorial I'll use Add 'N Edit Cookies.You'll notice if you're using the newest version of FireFox that you aren't able to install it.Step 2-Start Internet Explorer or another browser.