Try one of these articles:
- How do I check for Firefox OS updates and install them? Your device is set to automatically check for updates every day, but you can manually check at any time. We'll explain how.
- How do I find what version of Firefox OS I have? You can check to see what version of the Firefox OS software you have by looking under Device Information in the Settings app.
- Change The Default Language on Firefox OS This article describes how to change the language on Firefox OS.
- Save battery power Learn how to save battery power on your Firefox OS device.