Firefox v54.0 稳定版

下载：
X64:
https://download-installer.cdn.mozilla.net/pub/firefox/releases/54.0/win64/zh-CN/Firefox%20Setup%2054.0.exe

X86:
https://download-installer.cdn.mozilla.net/pub/firefox/releases/54.0/win32/zh-CN/Firefox%20Setup%2054.0.exe