Hi You can find the latest version of Firefox for Android in the Google Play Store. If you search for "Firefox" in the Play Store, you should be presented with options for '''Firefox for Android''' and '''Firefox for Android Beta'''. '''Firefox for Android''' is the latest version which you should be able to install directly from the Play Store app. Once installed (and assuming you have not turned off automatic updates) the Firefox for Android app should update in the same way as other apps on your Android device. I hope this helps, but if not, please come back here and we can look into a different option for you.