OpenBook-Billing & Banking App
v6.0.3 · 25.1 MB · code 603
Verify you're human
Solve this to start the download.
File information
UpdatedNov 28, 2023
PublishedMay 15, 2021
Packageco.openbook
Versionv6.0.3 (603)
Size25.1 MB
MD5b67b9b956c9d532633f7bbf077481561
Min SDK23
ABIsx86, x86-64, armeabi, armeabi-v7a, arm64-v8a
Malware scanTRUSTED
Signature SHA12D:84:D8:2D:26:C8:1C:F2:52:C9:4D:33:FF:A4:89:0D:56:08:8D:D8
SignerCN=Android, OU=Android, O=Google Inc., L=Mountain View, ST=California, C=US
Total downloads1,000,000
This version1,000,000
DeveloperOpen Digi Technologies Pvt Ltd
Age ratingEveryone
Security scan
TRUSTED
- Developer signature verified 2023-11-28
- Signature SHA1 2D:84:D8:2D:26:C8:1C:F2:52:C9:4D:33:FF:A4:89:0D:56:08:8D:D8
- File MD5 b67b9b956c9d532633f7bbf077481561
How to install OpenBook-Billing & Banking App v6.0.3 on Android 6.0 Marshmallow+
Takes about 2 minutes. You'll need roughly 25.1 MB of free storage.
- Grab co.openbook_603.apk — hit the Download button above (25.1 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 b67b9b956c9d5326…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find co.openbook_603.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 TRUSTED).
- Done — open OpenBook-Billing & Banking App — tap Open on the install screen, or find the OpenBook-Billing & Banking App icon in your app drawer (this build targets x86/x86-64/armeabi/armeabi-v7a/arm64-v8a devices).
Common install errors for OpenBook-Billing & Banking App
- "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 6.0 Marshmallow 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/armeabi-v7a/arm64-v8a native code. Devices with a different CPU will reject it.