OPERATING SYSTEM NOTES
v1.4.0.6 · 5.1 MB · code 10
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File information
UpdatedJun 4, 2024
PublishedFeb 19, 2021
Packagecom.techzone.higher.os
Versionv1.4.0.6 (10)
Size5.1 MB
MD5ce667653dedb64b8caebadaef8e56099
Min SDK19
Malware scanTRUSTED
Signature SHA1CC:21:76:CF:FD:D5:B9:6A:3B:30:BC:0A:58:0E:AE:B5:A4:AF:FB:77
SignerCN=Android, OU=Android, O=Google Inc., L=Mountain View, ST=California, C=US
Total downloads10,000
This version10,000
DeveloperTech Zone App's
Age ratingEveryone
What's new in v1.4.0.6
* New Release.
Security scan
TRUSTED
- Developer signature verified 2024-06-04
- Signature SHA1 CC:21:76:CF:FD:D5:B9:6A:3B:30:BC:0A:58:0E:AE:B5:A4:AF:FB:77
- File MD5 ce667653dedb64b8caebadaef8e56099
How to install OPERATING SYSTEM NOTES v1.4.0.6 on Android 4.4 KitKat+
Takes about 2 minutes. You'll need roughly 5.1 MB of free storage.
- Grab com.techzone.higher.os_10.apk — hit the Download button above (5.1 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 ce667653dedb64b8…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find com.techzone.higher.os_10.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 OPERATING SYSTEM NOTES — tap Open on the install screen, or find the OPERATING SYSTEM NOTES icon in your app drawer.
Common install errors for OPERATING SYSTEM NOTES
- "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 4.4 KitKat 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.