Madwallz: Best Free 4k Wallpapers
v4.0 · 3.9 MB · code 4
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File information
UpdatedSep 18, 2025
PublishedJun 21, 2021
Packagecom.Bigmadboy.MadWallz
Versionv4.0 (4)
Size3.9 MB
MD5d13dcb7afa7a6d69a50b6336eac43348
Min SDK16
Malware scanUNKNOWN
Signature SHA17E:85:69:01:13:93:BA:5D:15:19:8D:5B:62:59:5C:46:D3:DC:A8:14
SignerCN=Android, OU=Android, O=Google Inc., L=Mountain View, ST=California, C=US
Total downloads10
This version10
DeveloperBMB Company
Age ratingEveryone
What's new in v4.0
New 4k Wallpapers added and fixed bugs.
Security scan
UNKNOWN
- Developer signature verified 2021-11-09
- Signature SHA1 7E:85:69:01:13:93:BA:5D:15:19:8D:5B:62:59:5C:46:D3:DC:A8:14
- File MD5 d13dcb7afa7a6d69a50b6336eac43348
How to install Madwallz: Best Free 4k Wallpapers v4.0 on Android API 16+
Takes about 2 minutes. You'll need roughly 3.9 MB of free storage.
- Grab com.Bigmadboy.MadWallz_4.apk — hit the Download button above (3.9 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 d13dcb7afa7a6d69…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find com.Bigmadboy.MadWallz_4.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=Android, OU=Android, O=Google Inc., 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 UNKNOWN).
- Done — open Madwallz: Best Free 4k Wallpapers — tap Open on the install screen, or find the Madwallz: Best Free 4k Wallpapers icon in your app drawer.
Common install errors for Madwallz: Best Free 4k Wallpapers
- "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 16 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.