Are you still using an Android device running on version 4.2.2? While it may seem like a relic of the past, there are still many users out there who rely on these older devices for their daily needs. One popular browser that still supports older Android versions is Firefox, and in this article, we'll explore how to install and use Firefox APK on Android 4.2.2.

The most reliable source for this is the Mozilla FTP archive or reputable sites like APKMirror. For Android 4.2.2, users generally need to look for an older branch of Firefox, often version 48.0 or earlier. Newer versions (version 79 and above, known as "Fenix") strictly require Android 5.0 (Lollipop) or higher.

All must be downloaded as APKs from a trusted source like APKMirror and should be versions from ~2017–2019.

Since the Google Play Store will not show compatible versions for your device, you need to download the from a reputable archive: