What's new in Firefox Beta for Testers 77.0.0-beta.1

Thank you for testing Firefox Beta! We are excited to introduce a major upgrade and a brand new design, and as always we count on your feedback.

Key highlights:
-Bottom nav bar for easier access with option to customize
-Dark & light themes
-Collections to organize your tabs
-Improved support for Progressive Web Apps

More details at support.mozilla.org/kb/firefox-preview-upgrade-faqs

Scroll to available downloads
A more recent upload may be available below!

About Firefox Beta for Testers 77.0.0-beta.1

Download Firefox Beta for Testers 77.0.0-beta.1

This release comes in several variants (we currently have 4). Consult our handy FAQ to see which download is right for you.

Variant
Arch
Version
DPI
77.0.0-beta.1 APK
2015743937
June 3, 2020
armeabi-v7a
Android 5.0+
nodpi
77.0.0-beta.1 APK
2015743939
June 3, 2020
arm64-v8a
Android 5.0+
nodpi
77.0.0-beta.1 APK
2015743941
June 3, 2020
x86
Android 5.0+
nodpi
77.0.0-beta.1 APK
2015743943
June 3, 2020
x86_64
Android 5.0+
nodpi
All Releases
Firefox Beta for Testers 141.0b5

Version:141.0b5

Uploaded:July 3, 2025 at 3:50PM UTC

File size:53.66 MB

Downloads:20

Firefox Beta for Testers 141.0b4

Version:141.0b4

Uploaded:July 1, 2025 at 3:36PM UTC

File size:53.65 MB

Downloads:28

Firefox Beta for Testers 141.0b3

Version:141.0b3

Uploaded:June 28, 2025 at 10:31AM UTC

File size:53.61 MB

Downloads:40

Firefox Beta for Testers 141.0b2

Version:141.0b2

Uploaded:June 27, 2025 at 9:34AM UTC

File size:53.6 MB

Downloads:11

Firefox Beta for Testers 140.0b10

Version:140.0b10

Uploaded:June 17, 2025 at 5:40PM UTC

File size:53.17 MB

Downloads:94

Firefox Beta for Testers 140.0b9

Version:140.0b9

Uploaded:June 14, 2025 at 6:47PM UTC

File size:53.15 MB

Downloads:45

Firefox Beta for Testers 140.0b8

Version:140.0b8

Uploaded:June 12, 2025 at 3:36PM UTC

File size:53.15 MB

Downloads:23

Firefox Beta for Testers 140.0b7

Version:140.0b7

Uploaded:June 10, 2025 at 3:44PM UTC

File size:53.14 MB

Downloads:31

Firefox Beta for Testers 140.0b6

Version:140.0b6

Uploaded:June 7, 2025 at 3:21PM UTC

File size:53.13 MB

Downloads:45

Firefox Beta for Testers 140.0b5

Version:140.0b5

Uploaded:June 5, 2025 at 3:07PM UTC

File size:53.1 MB

Downloads:16

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