Download Firefox 12-51 52 Esr __full__

Firefox 12–51

Downloading old versions like or Firefox 52 ESR is primarily done for compatibility with legacy systems (like Windows XP/Vista) or specific NPAPI plugins (like Java or Silverlight) that modern browsers no longer support. Where to Download

  1. Visit the Mozilla FTP site: Go to the Mozilla FTP site at ftp.mozilla.org.
  2. Navigate to the Firefox directory: Click on the "pub" folder, then navigate to the "mozilla.org" directory, and finally, click on the "firefox" folder.
  3. Select the version: Find the "releases" folder and click on it. Then, select the "12.0" folder (or any other version between 12 and 51).
  4. Choose your operating system: Select your operating system (Windows, macOS, or Linux) and language.
  5. Download the installer: Click on the installer file (e.g., "firefox-12.0.exe" for Windows) to download it.

  • Do not use these versions for everyday browsing

    – they have unpatched critical security vulnerabilities . Use them only for: Download Firefox 12-51 52 Esr

    Select Your OS

    : Choose between win32/ , win64/ , linux-i686/ , linux-x86_64/ , or mac/ . Firefox 12–51 Downloading old versions like or Firefox

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