Try one of these articles:
- Update to a new version Your device is set to automatically check for updates every day, but you can manually check at any time. We'll explain how.
- Access Mozilla Services with Firefox Accounts Firefox Accounts is a safe and easy way to access Mozilla Services on all your devices. Learn how to create an account and access services by signing in.
- What is my Firefox OS version? 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 This article describes how to change the language on Firefox OS.