You can find all locales of the current Firefox version on the Firefox download page. Downloads marked as just Windows are the 32-bit versions, while the ones marked as Windows 64-bit are the 64-bit versions of Firefox.

To download more than one version or locale of Firefox on the same system, simply install each version in a different directory. You can then access each version by opening the executable file for that version.

You may need to manage your profiles, via the profile manager, if you would like both versions to share the same profile or each one to use a different profile. You can also download the advanced profile manager if you require more advanced settings for your Firefox profiles.

Wesley,

I don't need the latest version; I need to download specifically version 47.0.

Why do you need 47.0 specifically? and not 47.0.1, 48.0, 48.0.1, 48.0.2 ?

https://www.mozilla.org/firefox/releases/

Note older versions do not have any security fixes that have been put in since.

If you must use a older version like 47.0 then see below.

Download the larger Firefox setups with stub in name. https://archive.mozilla.org/pub/firefox/releases/47.0/win32/nl/ https://archive.mozilla.org/pub/firefox/releases/47.0/win32/en-US/ https://archive.mozilla.org/pub/firefox/releases/47.0/win32/en-GB/

or if you meant 47.0.1 https://archive.mozilla.org/pub/firefox/releases/47.0.1/win32/

James said

Why do you need 47.0 specifically? and not 47.0.1, 48.0, 48.0.1, 48.0.2 ? https://www.mozilla.org/firefox/releases/ Note older versions do not have any security fixes that have been put in since. If you must use a older version like 47.0 then see below. Download the larger Firefox setups with stub in name. https://archive.mozilla.org/pub/firefox/releases/47.0/win32/nl/ https://archive.mozilla.org/pub/firefox/releases/47.0/win32/en-US/ https://archive.mozilla.org/pub/firefox/releases/47.0/win32/en-GB/ or if you meant 47.0.1 https://archive.mozilla.org/pub/firefox/releases/47.0.1/win32/

Because I'm testing a bug which a client of our internet banking system reported using version 47.0 Dutch version.