I've downloaded 6.0.2 several times. Each time the download doesn't "stick". I keep getting message "you are working with insecure version".

1. Firefox downloads. On screen is "opening Firefox 6.0.2.dmg". I choose "Save File". It is saved in downloads. I open the file.
2. I move Firefox icon into Applications Folder. Message the "Firefox.app" already exists in this location". I replace it. Firefox app copies.
3. Next message is "updates available at http:www.firefox.com"
4. Sometimes I receive message "you are using an insecure versions".
Help, please and thank you.

If there are problems with updating or with the permissions then easiest 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 program and save the DMG file to the desktop
* Firefox 6.0.x: http://www.mozilla.com/en-US/firefox/all.html
* Trash the current Firefox application to do a clean (re-)install
* Install the new version that you have downloaded
Your profile data is stored elsewhere in the Firefox Profile Folder, so you won't lose your bookmarks and other personal data.
* http://kb.mozillazine.org/Profile_folder_-_Firefox

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