Please go to www.getfirefox.com, and download and install the latest version of Firefox manually.

Hello, after you download firefox from the [https://support.mozilla.org/en-US/questions/1089093#answer-794568 above link that Tyler Downer's] gave us and '''before''' install that latest version of Firefox manually, don't forget to '''trash''' the current Firefox application to do a clean install. Do not select to remove your personal data, your profile data is stored elsewhere in the [http://kb.mozillazine.org/Profile_folder_-_Firefox#Mac Firefox Profile Folder], so you won't lose your bookmarks or other personal data. see also: [https://support.mozilla.org/kb/how-download-and-install-firefox-mac How to download and install Firefox on Mac] thank you