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Download, install and ...
Download, install and migration
Download and install Firefox for Android
Install Firefox on Windows
Firefox release notes - What's New and Known Issues
How do I install Firefox on an Android device?
Install Firefox on Mac
Will Firefox work on my mobile device?
Profiles - Where Firefox stores your bookmarks, passwords and other user data
Firefox for Android FAQ
Is Firefox available for iPhone or iPad?
Change the default language of Firefox for mobile
Does Firefox work on Windows 8 and Windows RT?
Install Firefox on Linux
Back up and restore information in Firefox profiles
Recovering important data from an old profile
Use the Profile Manager to create and remove Firefox profiles