RUB Mobile
v3.12 · 5.9 MB · code 31
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File information
UpdatedAug 22, 2024
PublishedMar 27, 2022
Packagecom.blackboard.android.central.ruhr_de
Versionv3.12 (31)
Size5.9 MB
MD503be6415afec17072b047ed8b12e008c
Min SDK24
Malware scanTRUSTED
Signature SHA1DF:05:12:97:84:6B:7C:D4:2D:D6:26:FA:56:BE:58:60:89:E1:DB:6F
SignerCN=Eric Denman, OU=Blackboard Mobile, O=Blackboard, L=San Francisco, ST=CA, C=US
Total downloads50,000
This version50,000
DeveloperMoodle Pty Ltd.
Age ratingEveryone
What's new in v3.12
Enhancements
Security scan
TRUSTED
- Developer signature verified 2024-08-22
- Signature SHA1 DF:05:12:97:84:6B:7C:D4:2D:D6:26:FA:56:BE:58:60:89:E1:DB:6F
- File MD5 03be6415afec17072b047ed8b12e008c
How to install RUB Mobile v3.12 on Android 7.0 Nougat+
Takes about 2 minutes. You'll need roughly 5.9 MB of free storage.
- Grab com.blackboard.android.central.ruhr_de_31.apk — hit the Download button above (5.9 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 03be6415afec1707…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find com.blackboard.android.central.ruhr_de_31.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=Eric Denman, OU=Blackboard Mobile, O=Blackboard, L=San Francisco, ST=CA, 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 RUB Mobile — tap Open on the install screen, or find the RUB Mobile icon in your app drawer.
Common install errors for RUB Mobile
- "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 7.0 Nougat 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.