Firefox Nightly for Developers (Unreleased) APK

Here we provide Firefox Nightly for Developers (Unreleased) V 55.0a1 for Android 4.0.3++ Firefox Nightly is a developmental channel for new Mozilla Firefox releases.

Please note that Firefox Aurora is no longer available and has transitioned to Firefox Nightly. More details here:
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Latest Version Download Address:Firefox Nightly for Developers (Unreleased) APK