Publication icon

Publication

v4.20.20240819.511 · 23.6 MB · code 20

ba21bb628b80b3251b730a9fe2af8578 TRUSTED

Verify you're human

Solve this to start the download.

File information

UpdatedJul 18, 2025
PublishedMar 31, 2021
Packagebd.quantum.publication
Versionv4.20.20240819.511 (20)
Size23.6 MB
MD5ba21bb628b80b3251b730a9fe2af8578
Min SDK21
ABIsx86, x86-64, armeabi-v7a, arm64-v8a, mips, mips64
Malware scanTRUSTED
Signature SHA19E:8F:89:A9:33:D4:DD:46:F4:B7:FE:11:53:90:19:C8:CD:79:B4:55
SignerCN=Quantum Foundation, OU=Web Cell, O=Quantum, L=Dhaka, ST=Dhaka, C=bd
Total downloads10,000
This version10,000
DeveloperQuantum Method | The Science of Living
Age ratingEveryone

What's new in v4.20.20240819.511

- Stability and Performance Improvements

- Support up to Android Version 14

Security scan

TRUSTED
  • Developer signature verified 2025-07-18
  • Signature SHA1 9E:8F:89:A9:33:D4:DD:46:F4:B7:FE:11:53:90:19:C8:CD:79:B4:55
  • File MD5 ba21bb628b80b3251b730a9fe2af8578

How to install Publication v4.20.20240819.511 on Android 5.0 Lollipop+

Takes about 2 minutes. You'll need roughly 23.6 MB of free storage.

  1. Grab bd.quantum.publication_20.apk — hit the Download button above (23.6 MB). If your browser warns about APK files, choose Keep or Download anyway — that warning fires on every APK, not just this one.
  2. 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.
  3. (Optional) Verify the file — compute the MD5 of the downloaded APK and make sure it matches ba21bb628b80b325…. Any difference means the file is corrupted or tampered — delete and re-download.
  4. Open the APK — tap the download notification, or find bd.quantum.publication_20.apk in your Files app under Downloads, then tap it. Android's package installer will appear.
  5. Check the signer — the install screen will name the publisher. For this build it should read CN=Quantum Foundation, OU=Web Cell, O=Quantum, L=Dhaka, ST=Dhaka, C=bd. If it doesn't match, cancel — you have the wrong file.
  6. Review permissions & tap Install — scroll the permission list, then confirm. If Play Protect flags it, tap Install anyway (this APK was scanned as TRUSTED).
  7. Done — open Publication — tap Open on the install screen, or find the Publication icon in your app drawer (this build targets x86/x86-64/armeabi-v7a/arm64-v8a/mips/mips64 devices).
Common install errors for Publication
  • "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 5.0 Lollipop 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 x86/x86-64/armeabi-v7a/arm64-v8a/mips/mips64 native code. Devices with a different CPU will reject it.

All versions (2)

All versions page