Firefox Browser for Android
v31.0 · 28.7 MB · code 2014071712
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File information
UpdatedJul 22, 2014
PublishedJul 6, 2013
Packageorg.mozilla.firefox
Versionv31.0 (2014071712)
Size28.7 MB
MD598884b5503b5767250dd5215aeef5ed1
Min SDK8
ABIsarmeabi-v7a
Malware scanTRUSTED
Signature SHA192:0F:48:76:A6:A5:7B:4A:6A:2F:4C:CA:F6:5F:7D:29:CE:26:FF:2C
SignerCN=Release Engineering, OU=Release Engineering, O=Mozilla Corporation, L=Mountain View, ST=California, C=US
Total downloads500,000,000
This version500,000,000
DeveloperMozilla
Age ratingLow Maturity
What's new in v31.0
NEW
- Add web content to homescreen panels
- Add Quickshare buttons to context menu
- New locales added: Belarusian [be], Argentine Spanish [es-AR], Mexican Spanish [es-MX], Indonesian [id], Latvian [lv], Malay [ms]
CHANGED
- Disallow calling WeIDL constructors as functions of the web
DEV
- Fixes to box-shadow and other visual overflow
- Mute and volume available per window when using WebAudio
FIXED
- Ignore autocomplete="off" when saving passwords
https://www.mozilla.org/mobile/notes/
- Add web content to homescreen panels
- Add Quickshare buttons to context menu
- New locales added: Belarusian [be], Argentine Spanish [es-AR], Mexican Spanish [es-MX], Indonesian [id], Latvian [lv], Malay [ms]
CHANGED
- Disallow calling WeIDL constructors as functions of the web
DEV
- Fixes to box-shadow and other visual overflow
- Mute and volume available per window when using WebAudio
FIXED
- Ignore autocomplete="off" when saving passwords
https://www.mozilla.org/mobile/notes/
Security scan
TRUSTED
- Developer signature verified 2025-03-29
- Scanned for malware 2020-11-02 23:21:59
- Signature SHA1 92:0F:48:76:A6:A5:7B:4A:6A:2F:4C:CA:F6:5F:7D:29:CE:26:FF:2C
- File MD5 98884b5503b5767250dd5215aeef5ed1
How to install Firefox Browser for Android v31.0 on Android API 8+
Takes about 2 minutes. You'll need roughly 28.7 MB of free storage.
- Grab org.mozilla.firefox_2014071712.apk — hit the Download button above (28.7 MB). If your browser warns about APK files, choose Keep or Download anyway — that warning fires on every APK, not just this one.
- Trust your browser to install — on Android 8+ go to Settings → Apps → Special access → Install unknown apps, pick the app you downloaded with (Chrome, Firefox, Files, etc.), and flip Allow from this source. On older Android, toggle Unknown sources under Security.
- (Optional) Verify the file — compute the MD5 of the downloaded APK and make sure it matches 98884b5503b57672…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find org.mozilla.firefox_2014071712.apk in your Files app under Downloads, then tap it. Android's package installer will appear.
- Check the signer — the install screen will name the publisher. For this build it should read CN=Release Engineering, OU=Release Engineering, O=Mozilla Corporation, L=Mountain View, ST=California, C=US. If it doesn't match, cancel — you have the wrong file.
- Review permissions & tap Install — scroll the permission list, then confirm. If Play Protect flags it, tap Install anyway (this APK was scanned as TRUSTED).
- Done — open Firefox Browser for Android — tap Open on the install screen, or find the Firefox Browser for Android icon in your app drawer (this build targets armeabi-v7a devices).
Common install errors for Firefox Browser for Android
- "App not installed" — usually means an older or differently-signed version is already on your device. Uninstall it first, then retry. Your data may be lost unless you back it up.
- "Parse error" — the APK is for a newer Android than yours. This version needs Android API 8 or later. Pick an older build from the versions list below.
- "There was a problem parsing the package" — the download was interrupted. Delete the file and re-download over Wi-Fi.
- Works on one phone but not another — this build ships armeabi-v7a native code. Devices with a different CPU will reject it.