HI there John If you want to be sure you are running the most up to date version of Firefox, best thing to do is ensure you have done a sync of your data and do a reinstall of firefox from the website. This will help ensure that you are getting the most up to date version. https://www.firefox.com/en-GB/?redirect_source=mozilla-org There are some fake downloads out there. If you think you have found one, please see the article [[I found a fake Firefox update]]. If you need any further guideance, please do get back in touch with us. All the best Brad