What's new in Firefox Nightly for Developers 3.0.0

Thank you for testing Firefox Preview. In this release, we fixed a few major user interface and usability bugs. Enjoy browsing!

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About Firefox Nightly for Developers 3.0.0

Firefox Nightly for Developers 3.0.0 Play Store screenshots (4)

Screenshots from version 159.0a1

Download Firefox Nightly for Developers 3.0.0

This release comes in several variants (we currently have 8). Consult our handy FAQ to see which download is right for you.

Variant
Arch
Version
DPI
3.0.0 APK
13372012
December 4, 2019
armeabi-v7a
Android 5.0+
nodpi
3.0.0 APK
13372013
December 4, 2019
arm64-v8a
Android 5.0+
nodpi
3.0.0 APK
13372014
December 4, 2019
x86
Android 5.0+
nodpi
3.0.0 APK
13372015
December 4, 2019
x86_64
Android 5.0+
nodpi
3.0.0 APK
13431955
December 13, 2019
armeabi-v7a
Android 5.0+
nodpi
3.0.0 APK
13431956
December 13, 2019
arm64-v8a
Android 5.0+
nodpi
3.0.0 APK
13431957
December 13, 2019
x86
Android 5.0+
nodpi
3.0.0 APK
13431958
December 13, 2019
x86_64
Android 5.0+
nodpi
All Releases

Version:159.0a1

Uploaded:October 6, 2026 at 3:37PM UTC

File size:67.85 MB

Downloads:315

Firefox Nightly for Developers 158.0a1

Version:158.0a1

Uploaded:September 24, 2026 at 2:11PM UTC

File size:67.07 MB

Downloads:424

Firefox Nightly for Developers 157.0a1

Version:157.0a1

Uploaded:September 10, 2026 at 4:40AM UTC

File size:48.14 MB

Downloads:452

Firefox Nightly for Developers 156.0a1

Version:156.0a1

Uploaded:August 28, 2026 at 7:42PM UTC

File size:47.84 MB

Downloads:395

Firefox Nightly for Developers 155.0a1

Version:155.0a1

Uploaded:August 13, 2026 at 1:25PM UTC

File size:48.15 MB

Downloads:897

Version:154.0a1

Uploaded:July 20, 2026 at 5:02PM UTC

File size:66.41 MB

Downloads:1,556

Version:153.0a1

Uploaded:June 15, 2026 at 2:12PM UTC

File size:65.26 MB

Downloads:1,481

Version:152.0a1

Uploaded:May 18, 2026 at 2:18PM UTC

File size:62.75 MB

Downloads:1,373

Version:151.0a1

Uploaded:April 20, 2026 at 1:22PM UTC

File size:59.06 MB

Downloads:1,603

Version:150.0a1

Uploaded:March 23, 2026 at 11:36AM UTC

File size:58.14 MB

Downloads:1,420

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