Firefox Nightly for Developers 57.0a1 (x86) (Android 4.1+)

By Mozilla

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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:

Download the release version of Firefox here:

Firefox Nightly is designed to showcase the more experimental builds of Firefox. The Nightly channel allows users to experience the newest Firefox innovations in an unstable environment and provide feedback on features and performance to help determine what makes the final release.

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Firefox Nightly automatically sends feedback to Mozilla:

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See our list of supported devices and latest minimum system requirements at

Mozilla marketing: In order to understand the performance of certain Mozilla marketing campaigns, Firefox sends data, including a Google advertising ID, IP address, timestamp, country, language/locale, operating system, app version, to our third party vendor. Learn more by reading our Privacy Notice here:
Package: org.mozilla.fennec_aurora
Version: 57.0a1 (2015510036)
Screen Density: nodpi
CPU Architecture: x86
Supports: android.hardware.location, android.hardware.location.gps, android.hardware.touchscreen, android.hardware.nfc,,, android.hardware.microphone,,
Uploaded: September 7, 2017 at 5:36 pm UTC
File size: 46.22 MB (48460635 bytes)
Minimum: Android 4.1+ (Jelly Bean - API 16)
Target: Android 6.0 (Marshmallow - API 23)
MD5: b9f7864f8af63ce59ea7e0cefb208140
Downloads: 137
All recent and old versions of Firefox Nightly for Developers
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Firefox Nightly for Developers 57.0a1
43.73 MB
Sep 7, 2017 at 5:44 pm
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Firefox Nightly for Developers 56.0a1
42.98 MB
Jun 13, 2017 at 4:30 pm
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Firefox Nightly for Developers 54.0a2
44.28 MB
Mar 25, 2017 at 3:23 pm
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Firefox Nightly for Developers 53.0a2
36.89 MB
Mar 6, 2017 at 5:27 pm
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Firefox Nightly for Developers 52.0a2
35.73 MB
Nov 22, 2016 at 5:37 pm
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Firefox Nightly for Developers 51.0a2
42.89 MB
Oct 3, 2016 at 6:11 pm
Version History of Same Variant