NoRoot Firewall v3.0.1
APK · 1 MB · version code 41 · Android 4.0+ · uploaded Nov 30, 2014
The source store flagged this file with a security warning (Warning). We recommend not installing it. See other versions.
Quick check before downloading
Answer this to unlock the download. It keeps automated downloaders away.
Compared with the latest version
The latest version is v4.0.2, uploaded Jan 7, 2020 — about 5 years after this one.
- Size: this file is 1 MB; the latest is 2.6 MB (1.6 MB larger).
- Android: this version needs Android 4.0+; the latest needs Android 5.0+. Use this one if your device runs an older Android release.
- The latest version asks for 1 more permission: Run foreground services.
File information
- Version
- v3.0.1 (41)
- Uploaded
- Nov 30, 2014
- Size
- 1 MB
- Requires
- Android 4.0+ (API 14)
- CPU support
- ARM (legacy), ARM 32-bit
- Screen
- Small screens and larger
- MD5
- b48c35a3ea1cf292c7578862690c3d6d
- Signing certificate (SHA-1)
- 88:9E:E6:C8:EC:3C:7D:C4:60:A5:CE:C0:16:20:FA:8B:4A:3F:44:5E
- Signed by
- CN=Unknown, OU=Unknown, O=Unknown, L=Unknown, ST=Unknown, C=Unknown
- File name
- app-greyshirts-firewall-41-7785098-b48c35a3ea1cf292c7578862690c3d6d.apk
- Package
- app.greyshirts.firewall
- Downloads (all versions)
- 10M+
- Age rating
- PEGI 3 · Everyone
What's new in v3.0.1
- Notification sound and light reverted to the previous behavior
Permissions (3)
This version requests 3 permissions, none of them sensitive.
- Full network access android.permission.INTERNET
- Run at startup android.permission.RECEIVE_BOOT_COMPLETED
- View network connections android.permission.ACCESS_NETWORK_STATE
Security & authenticity
Security rating: Warning
Signing certificate
- Signature matches the Google Play version Checked by the source store on Aug 31, 2016.
- Certificate issued to “Unknown” This is the certificate of the Google Play version.
- Same certificate as the other version checked
Store checks
- Developer signature check failed Mar 10, 2025
- Validated against Google Play Aug 31, 2016
- Antivirus scan passed Nov 10, 2020
- Uploaded by “wcd” Bronze tier · 1,717 followers · uploading since 2013
Scans come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures (1 other version compared). AAPKs doesn't scan files itself.
How to install NoRoot Firewall on Android 4.0+
You'll need about 2 MB of free space.
- Download the APK — tap Download APK above (1 MB). Chrome shows “File might be harmful” for every APK file; choose Download anyway only if you trust this file.
- Open the file — tap the download notification, or open Files › Downloads and tap app-greyshirts-firewall-41-7785098-b48c35a3ea1cf292c7578862690c3d6d.apk.
- Allow the install (first time only) — Android 8 and later asks for permission the first time an app opens an APK: tap Settings in the prompt, turn on Allow from this source, then go back. Manual path: Settings › Apps › Special app access › Install unknown apps (on Samsung: Settings › Apps › ⋮ › Special access). On Android 7 and older: Settings › Security › Unknown sources.
- Check the file (optional) — the MD5 of the downloaded file should be b48c35a3ea1cf292c7578862690c3d6d. If it differs, the file is damaged or was changed: delete it and download again.
- Tap Install — Android asks “Do you want to install this app?”. The source store flagged this file with a security warning; we recommend not installing it. If Play Protect blocks it, tap Cancel. If an earlier version is installed, this one only installs as an update when it is signed with the same certificate (SHA-1 shown above).
- Open NoRoot Firewall — tap Open on the install screen, or find it in your app drawer.
Common install problems
- “App not installed” — a version signed with a different certificate, or a newer version, is already installed (Android doesn't allow downgrades). Uninstall it first; back up your data, because uninstalling deletes it.
- “There was a problem parsing the package” — the file is incomplete, or your Android is too old (this version needs Android 4.0+). Download it again, or pick an older version.
- “App not compatible with your device” — this build contains native code for ARM (legacy), ARM 32-bit only. Devices with other processors can't install it.
- Blocked by Play Protect — Play Protect checks apps from outside the Play Store. Only continue if you trust the source; for this file we recommend not to.