Firefox Version 52.9. 0 Esr ~repack~ Download May 2026

This version supports "legacy" add-ons that were phased out with the introduction of Firefox Quantum (version 57).

It is the absolute last official Mozilla release that will run on these systems. firefox version 52.9. 0 esr download

Released on June 26, 2018, this version was designed to give users on unsupported operating systems a few more months of security updates before the browser transitioned to newer requirements. Key reasons users still seek this version today include: This version supports "legacy" add-ons that were phased