Firefox 47.0 is the current Release.

Firefox updates whether for Windows, Mac OSX or Linux are done internally in Firefox itself (with a .mar file) and by download from say www.mozilla.org/firefox/all/

There is no such thing as Firefox update patches .exe as scammers have been using this tactic in last few years to try and trick inexperienced Windows and or Firefox users into downloading and infecting their Windows if they run the said .exe

. Whenever you get a message / popup that software / files need to be updated;

DO NOT USE ANY OF THE PROVIDED LINKS

While this may be a legitimate message, it could also be Malware or a Virus. Any time you want or need to check for upgrades, go to the website of the True Owner of the program in question. For example, to check out Firefox, go to https://www.mozilla.org {web link}

You can also report such a site at; Google Report Phishing Page {web link} which is the same when done while on site by going to Help > Report Web Forgery

Help us safeguard Mozilla’s trademarks by reporting misuse {web link}