What's new in Firefox Nightly for Developers 3.2.1

Login management
In-App Language Chooser
Top Sites
Bypassing Certificate errors
Fix persistent undo notification
Initial extension support featuring uBlock Origin
And other bugfixes and improvements

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A more recent upload may be available below!

About Firefox Nightly for Developers 3.2.1

Firefox Nightly for Developers 3.2.1 screenshots (4)

Screenshots from version 151.0a1

Download Firefox Nightly for Developers 3.2.1

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
3.2.1 APK
20250349
February 3, 2020
armeabi-v7a
Android 5.0+
nodpi
3.2.1 APK
20250350
February 3, 2020
arm64-v8a
Android 5.0+
nodpi
3.2.1 APK
20250351
February 3, 2020
x86
Android 5.0+
nodpi
3.2.1 APK
20250352
February 3, 2020
x86_64
Android 5.0+
nodpi
All Releases

Version:151.0a1

Uploaded:April 10, 2026 at 1:49AM UTC

File size:59.06 MB

Downloads:815

Version:150.0a1

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

File size:58.14 MB

Downloads:1,302

Firefox Nightly for Developers 149.0a1

Version:149.0a1

Uploaded:February 23, 2026 at 1:04PM UTC

File size:57.05 MB

Downloads:2,295

Firefox Nightly for Developers 148.0a1

Version:148.0a1

Uploaded:January 12, 2026 at 2:44PM UTC

File size:56.34 MB

Downloads:1,401

Firefox Nightly for Developers 147.0a1

Version:147.0a1

Uploaded:December 8, 2025 at 1:51PM UTC

File size:55.60 MB

Downloads:1,781

Firefox Nightly for Developers 146.0a1

Version:146.0a1

Uploaded:November 10, 2025 at 2:18PM UTC

File size:58.28 MB

Downloads:2,201

Firefox Nightly for Developers 145.0a1

Version:145.0a1

Uploaded:October 13, 2025 at 8:09AM UTC

File size:58.17 MB

Downloads:1,265

Firefox Nightly for Developers 144.0a1

Version:144.0a1

Uploaded:September 14, 2025 at 5:33PM UTC

File size:56.07 MB

Downloads:1,319

Version:143.0a1

Uploaded:August 18, 2025 at 9:16PM UTC

File size:55.76 MB

Downloads:1,181

Version:142.0a1

Uploaded:July 22, 2025 at 3:31AM UTC

File size:54.73 MB

Downloads:1,137

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