Ultimate fix for a Firefox update failure - CNET

Fix Firefox update fail

Update Firefox to the latest version | Firefox Help

How To Update Firefox - YouTube

Firefox update failed | Firefox Support Forum | Mozilla Support

Firefox extension update downloads but fails to install - Stack Overflow

I'm having trouble updating a Firefox extension I wrote. It appears to download the new version, uninstall the old version, and then reinstall the old version.

How to fix the Update Failed error message when updating Firefox

Firefox Update | Mozilla Firefox Download

richarddavies.us » Firefox "Software Update Failed" problem: solved!