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I have v3.0.1 on my laptop (mac), just tried upgrading to latest version but couldn't copy to app folder b/c "do not have sufficient privileges for some of the items".

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Do I need to uninstall the old firefox? but if i do, will i loose my bookmarks, passwords, etc?

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If you have 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

  • 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.

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ok thanks, will try now....