Premium
What's new in Firefox Beta for Testers 59.0
* Improved user experience on HTTP Live Streaming (HLS) media playback
About Firefox Beta for Testers 59.0
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.**
Premium
Find a bug? Report it at mzl.la/android_bugs.
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 59.0
This release comes in several variants (we currently have 3). Consult our handy FAQ to see which download is right for you.
Version:148.0b4
Uploaded:January 19, 2026 at 4:56PM UTC
File size:55.99 MB
Downloads:10
Version:148.0b3
Uploaded:January 16, 2026 at 2:49PM UTC
File size:55.97 MB
Downloads:22
Version:148.0b2
Uploaded:January 15, 2026 at 11:36PM UTC
File size:55.96 MB
Downloads:13
Version:148.0b1
Uploaded:January 14, 2026 at 2:39PM UTC
File size:55.95 MB
Downloads:33
Version:147.0b9
Uploaded:December 31, 2025 at 3:32PM UTC
File size:55.27 MB
Downloads:135
Version:147.0b8
Uploaded:December 29, 2025 at 3:24PM UTC
File size:55.27 MB
Downloads:35
Version:147.0b7
Uploaded:December 22, 2025 at 9:15PM UTC
File size:55.23 MB
Downloads:75
Version:147.0b6
Uploaded:December 19, 2025 at 3:46PM UTC
File size:55.2 MB
Downloads:31
Version:147.0b5
Uploaded:December 17, 2025 at 3:19PM UTC
File size:55.2 MB
Downloads:35
Version:147.0b4
Uploaded:December 15, 2025 at 4:20PM UTC
File size:55.2 MB
Downloads:44
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