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I can't download update to 3.6.15, it just shows it "streaming", also when I try to upgrade to 4.0 it tells me that I am not authorized to continue.

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Please refer to question, regarding update of 3.6.15 and upgrading to 4.0.

Please refer to question, regarding update of 3.6.15 and upgrading to 4.0.

Chosen solution

If you get an error message that you do not have sufficient permissions or have other problems with updating to update 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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Chosen Solution

If you get an error message that you do not have sufficient permissions or have other problems with updating to update 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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''This reply is regarding question: updating 3.6.15 and upgrading to 4.0, Cor-el, you were right on the money! It worked perfectly the first time! Thank you so much!''