Virtual Blackboard
v1.3 · 1.9 MB · code 4
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File information
UpdatedJul 26, 2017
PublishedJul 26, 2017
Packagecom.techz.virtualblackboard
Versionv1.3 (4)
Size1.9 MB
MD5fb304b6117062c60c4f0baec5d6cf05f
Min SDK14
Malware scanTRUSTED
Signature SHA11D:32:8C:D4:48:E1:67:B3:FC:33:77:B8:A4:CF:E3:04:D0:80:78:8A
SignerCN=Sujata Patel, OU=Android, O=TechZ Solutions, L=Pune, ST=Maharashtra, C=91
Total downloads100,000
This version100,000
DeveloperTechZ Solutions
Age ratingEveryone
What's new in v1.3
Added chromecast feature
Security scan
TRUSTED
- Developer signature verified 2017-07-26
- Scanned for malware 2020-12-05 13:08:13
- Signature SHA1 1D:32:8C:D4:48:E1:67:B3:FC:33:77:B8:A4:CF:E3:04:D0:80:78:8A
- File MD5 fb304b6117062c60c4f0baec5d6cf05f
How to install Virtual Blackboard v1.3 on Android API 14+
Takes about 2 minutes. You'll need roughly 1.9 MB of free storage.
- Grab com.techz.virtualblackboard_4.apk — hit the Download button above (1.9 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 fb304b6117062c60…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find com.techz.virtualblackboard_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=Sujata Patel, OU=Android, O=TechZ Solutions, L=Pune, ST=Maharashtra, C=91. 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 Virtual Blackboard — tap Open on the install screen, or find the Virtual Blackboard icon in your app drawer.
Common install errors for Virtual Blackboard
- "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 14 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.