. 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}

To actually answer the question.

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 mozilla.org like say www.mozilla.org/firefox/all/

There is no such thing as Firefox_update.exe or Firefox_patches.exe and these are always from random sites 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

I use Linux and have downloaded a number of these fake Firefox updates .exe's over a few years and uploaded to virustotal and they always were found to be trojans, virus and such malware.

Thanks, your answer was very helpful. I will look for domain ".mar" and ignore all other. Thanks a bunch.

chuckia said

Thanks, your answer was very helpful. I will look for domain ".mar"

There is no .mar domain as it is a type of data file format.

This is something a Firefox user will not see as it is installed internally in Firefox. Examples of .mar patches is in https://archive.mozilla.org/pub/firefox/releases/47.0/update/win32/en-US/