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Can't update or load new version; says I don't have permission; update is grayed out

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I want to update to 3.6 from 5, but the update is grayed out and when I try to put the new version into my applications folder it tells me I don't have permission.

I want to update to 3.6 from 5, but the update is grayed out and when I try to put the new version into my applications folder it tells me I don't have permission.

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  • Download a new copy of the Firefox program: http://www.mozilla.com/firefox/all.html
  • Trash the current Firefox application to do a clean (re)install.
  • Install the new version that you have downloaded.

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