Since Uptodown is known for hosting older versions and providing a secure download manager, here is a for a tool that combines the two:
Firefox ESR for Windows - Download it from Uptodown for free firefox uptodown
Based on your query "firefox uptodown," I understand you're looking for a feature related to (a popular alternative app store). Since Uptodown is known for hosting older versions
The main reason users flock to Uptodown for Firefox is the ability to download . firefox uptodown