Ok installing upstream version does not fix anything or overcome anything, it is avoiding issues. We do not support upstream version of firefox nor thunderbird. https://help.ubuntu.com/community/FirefoxNewVersion shows you how to do it easy and safely.
Ok installing upstream version does not fix anything or overcome anything, it is avoiding issues. We do not support upstream version of firefox nor thunderbird. https:/ /help.ubuntu. com/community/ FirefoxNewVersi on shows you how to do it easy and safely.