Download Fixed Firefox 12-51 52 Esr

win32/ (Recommended for maximum compatibility with old plugins like Java) Windows 64-bit: win64/ Linux 32-bit: linux-i686/ Linux 64-bit: linux-x86_64/ Mac OS X: mac/ Step 4: Choose Your Language and Download

These versions have unpatched security vulnerabilities. Only download them for air-gapped machines, virtual machines, or specific legacy tasks. Do not use them for online banking or logging into modern social media. Download Firefox 12-51 52 Esr

Always download directly from archive.mozilla.org . Never trust third-party "old version" websites, as they are notorious for bundling malware. Download Firefox 12-51 52 Esr

These versions are years out of date. They lack modern defenses against malware, phishing, and tracking. Download Firefox 12-51 52 Esr