Firefox 42.0
https://download.mozilla.org/?product=firefox-42.0-SSL&os=win&lang=ru
https://ftp.mozilla.org/pub/firefox/releases/latest/win32/ru/Firefox Setup 42.0.exe
https://download-installer.cdn.mozilla.net/pub/firefox/releases/latest/win32/ru/Firefox Setup 42.0.exe
https://ftp.mozilla.org/pub/firefox/releases/42.0/win32/ru/Firefox Setup 42.0.exe
https://download-installer.cdn.mozilla.net/pub/firefox/releases/42.0/win32/ru/Firefox Setup 42.0.exe
64-bit
https://download.mozilla.org/?product=firefox-42.0-SSL&os=win64&lang=ru
https://ftp.mozilla.org/pub/firefox/releases/42.0/win64/ru/Firefox Setup 42.0.exe
https://download-installer.cdn.mozilla.net/pub/firefox/releases/42.0/win64/ru/Firefox Setup 42.0.exe
Firefox ESR 38.4.0
https://download.mozilla.org/?product=firefox-38.4.0esr-SSL&os=win&lang=ru
https://ftp.mozilla.org/pub/firefox/releases/latest-esr/win32/ru/Firefox Setup 38.4.0esr.exe
https://download-installer.cdn.mozilla.net/pub/firefox/releases/latest-esr/win32/ru/Firefox Setup 38.4.0esr.exe
https://ftp.mozilla.org/pub/firefox/releases/38.4.0esr/win32/ru/Firefox Setup 38.4.0esr.exe
https://download-installer.cdn.mozilla.net/pub/firefox/releases/38.4.0esr/win32/ru/Firefox Setup 38.4.0esr.exe
https://download.mozilla.org/?product=firefox-42.0-SSL&os=win&lang=ru
https://ftp.mozilla.org/pub/firefox/releases/latest/win32/ru/Firefox Setup 42.0.exe
https://download-installer.cdn.mozilla.net/pub/firefox/releases/latest/win32/ru/Firefox Setup 42.0.exe
https://ftp.mozilla.org/pub/firefox/releases/42.0/win32/ru/Firefox Setup 42.0.exe
https://download-installer.cdn.mozilla.net/pub/firefox/releases/42.0/win32/ru/Firefox Setup 42.0.exe
64-bit
https://download.mozilla.org/?product=firefox-42.0-SSL&os=win64&lang=ru
https://ftp.mozilla.org/pub/firefox/releases/42.0/win64/ru/Firefox Setup 42.0.exe
https://download-installer.cdn.mozilla.net/pub/firefox/releases/42.0/win64/ru/Firefox Setup 42.0.exe
Firefox ESR 38.4.0
https://download.mozilla.org/?product=firefox-38.4.0esr-SSL&os=win&lang=ru
https://ftp.mozilla.org/pub/firefox/releases/latest-esr/win32/ru/Firefox Setup 38.4.0esr.exe
https://download-installer.cdn.mozilla.net/pub/firefox/releases/latest-esr/win32/ru/Firefox Setup 38.4.0esr.exe
https://ftp.mozilla.org/pub/firefox/releases/38.4.0esr/win32/ru/Firefox Setup 38.4.0esr.exe
https://download-installer.cdn.mozilla.net/pub/firefox/releases/38.4.0esr/win32/ru/Firefox Setup 38.4.0esr.exe