It is possible that I’m the only one who was looking for the full installer for Firefox 57 64bit. I don’t mean the stub portion, but the whole thing. And if there is someone here who has the installer, they probably had a better way of finding the exact url. But here it is anyway.

https://ftp.mozilla.org/pub/firefox/nightly/latest-mozilla-central-l10n/firefox-57.0a1.en-US.win64.installer.exe

The fun never ends on Firefox 57. There are usually two updates a day, one at the very least. One user likened it to Christmas every day. But it’s not like that. It’s more for geeks who like to see what’s new, what’s broken, and then go to a forum somewhere and complain. The cutting edge, is where you bleed.