
What's new in Firefox Beta for Testers 77.0.0-beta.2
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
About Firefox Beta for Testers 77.0.0-beta.2
Help refine and polish the newest features almost ready for prime time. With Firefox Beta, you get to test the latest performance, customization and security enhancements before they make it to our next version.
Have an impact by helping to put the finishing touches on features and functionality.
**We need your help testing Intel x86 Atom based devices! If you have an Intel x86 Atom based device, download Firefox Beta and tell us what you think.**
Find a bug? Report it at github.com/mozilla-mobile/fenix/issues.
Want to know more about the permissions Firefox requests? mzl.la/Permissions
See our list of supported devices and latest minimum system requirements at www.mozilla.org/en-US/firefox/mobile/platforms/.
ABOUT MOZILLA
Mozilla is a proudly non-profit organization dedicated to keeping the power of the Web in people's hands.
We're a global community of users, contributors and developers working to innovate on your behalf.
When you use Firefox, you become a part of that community, helping us build a brighter future for the Web.
Learn more at www.mozilla.org.
Download Firefox Beta for Testers 77.0.0-beta.2
This release comes in several variants (we currently have 4). Consult our handy FAQ to see which download is right for you.
Version:139.0b7
Uploaded:May 13, 2025 at 3:10PM UTC
File size:52.5 MB
Downloads:5
Version:139.0b6
Uploaded:May 10, 2025 at 4:01PM UTC
File size:52.49 MB
Downloads:53
Version:139.0b5
Uploaded:May 8, 2025 at 5:52PM UTC
File size:52.48 MB
Downloads:27
Version:139.0b4
Uploaded:May 6, 2025 at 6:39PM UTC
File size:52.46 MB
Downloads:22
Version:139.0b3
Uploaded:May 3, 2025 at 4:31PM UTC
File size:52.46 MB
Downloads:59
Version:139.0b2
Uploaded:May 2, 2025 at 1:30PM UTC
File size:52.44 MB
Downloads:22
Version:139.0b1
Uploaded:April 30, 2025 at 11:00PM UTC
File size:52.41 MB
Downloads:26
Version:138.0b9
Uploaded:April 19, 2025 at 8:14PM UTC
File size:51.36 MB
Downloads:138
Version:138.0b8
Uploaded:April 17, 2025 at 3:51PM UTC
File size:51.35 MB
Downloads:39
Version:138.0b7
Uploaded:April 15, 2025 at 3:29PM UTC
File size:51.34 MB
Downloads:15