My update won't install.
I'm trying to update my firefox but it won't install. There are no other versions firefox running. I get to the point of apply update, I have tried restarting my computer multiple times. I have an iMac. I use OS X 10.9.2
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If there are problems with updating or with the permissions then best is to download the full version and trash the currently installed version to do a clean install of the new version.
Download a new copy of the Firefox application and save the disk image file to the desktop
- Firefox 28.0: http://www.mozilla.org/en-US/firefox/all.html
- Trash the current Firefox application (open the Applications folder in the Finder and drag the Firefox application to the Trash) to do a clean (re)install
- Install the new version that you have downloaded
- https://support.mozilla.org/kb/Installing+Firefox+on+Mac
Your personal data is stored elsewhere in the Firefox profile folder, so you won't lose your bookmarks and other personal data when you uninstall and (re)install Firefox.
Download and install a fresh copy of Firefox from https://www.mozilla.org/firefox/all/ as suggested for update problems in the article Update Firefox to the latest release
If you need more help installing Firefox on your Mac, see How to download and install Firefox on Mac