Rule Book
v2.7 · 27.3 MB · code 20780
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File information
UpdatedJun 4, 2024
PublishedJun 13, 2021
Packagecom.rssb.rulebook
Versionv2.7 (20780)
Size27.3 MB
MD563d3ea2d0d8b70381f09eb21e9ad6a3a
Min SDK21
ABIsarmeabi-v7a, arm64-v8a
Malware scanTRUSTED
Signature SHA1DE:E2:7F:05:FB:E8:57:E9:F8:DC:76:CA:41:2A:CF:19:50:92:75:8F
SignerCN=Mark Poston, OU=RSSB, O=RSSB, L=London, ST=London, C=UK
Total downloads10,000
This version10,000
DeveloperRSSB (Rail Safety & Standards Board)
Age ratingEveryone
Security scan
TRUSTED
- Developer signature verified 2024-06-04
- Signature SHA1 DE:E2:7F:05:FB:E8:57:E9:F8:DC:76:CA:41:2A:CF:19:50:92:75:8F
- File MD5 63d3ea2d0d8b70381f09eb21e9ad6a3a
How to install Rule Book v2.7 on Android 5.0 Lollipop+
Takes about 2 minutes. You'll need roughly 27.3 MB of free storage.
- Grab com.rssb.rulebook_20780.apk — hit the Download button above (27.3 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 63d3ea2d0d8b7038…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find com.rssb.rulebook_20780.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=Mark Poston, OU=RSSB, O=RSSB, L=London, ST=London, C=UK. 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 Rule Book — tap Open on the install screen, or find the Rule Book icon in your app drawer (this build targets armeabi-v7a/arm64-v8a devices).
Common install errors for Rule Book
- "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 armeabi-v7a/arm64-v8a native code. Devices with a different CPU will reject it.