Class 12 PCB Notes Offline v1.4.0.6
APK · 19.4 MB · version code 10 · Android 4.4+ · uploaded Jun 5, 2024
- Same certificate as v1.4.0.8, which matches Google Play Details
Quick check before downloading
Answer this to unlock the download. It keeps automated downloaders away.
Compared with the latest version
The latest version is v1.4.0.8, uploaded Nov 10, 2025 — about 1 year after this one.
- Size: this file is 19.4 MB; the latest is 23.3 MB (3.9 MB larger).
- Android: this version needs Android 4.4+; the latest needs Android 5.0+. Use this one if your device runs an older Android release.
- The latest version asks for 4 more permissions: Access adservices ad id, Access adservices attribution, Access adservices topics, Internal broadcast protection (app-defined).
- The latest version no longer asks for: Run at startup.
File information
- Version
- v1.4.0.6 (10)
- Uploaded
- Jun 5, 2024
- Size
- 19.4 MB
- Requires
- Android 4.4+ (API 19)
- CPU support
- Any (no native code)
- Screen
- Small screens and larger
- MD5
- 4975c01d1418e0d77a119bf2ea4ad5df
- Signing certificate (SHA-1)
- 50:E4:C2:AE:9B:04:99:45:31:66:86:5E:DC:55:89:D8:2D:B6:84:CE
- Signed by
- CN=Android, OU=Android, O=Google Inc., L=Mountain View, ST=California, C=US
- File name
- com-techzone-senior-secondarypcb-10-67818159-4975c01d1418e0d77a119bf2ea4ad5df.apk
- Package
- com.techzone.senior.secondarypcb
- Downloads (all versions)
- 100K+
- Age rating
- PEGI 3 · Everyone
What's new in v1.4.0.6
* New Released.
Permissions (6)
This version requests 6 permissions, none of them sensitive.
- Advertising ID com.google.android.gms.permission.AD_ID
- Full network access android.permission.INTERNET
- Prevent the device from sleeping android.permission.WAKE_LOCK
- Run at startup android.permission.RECEIVE_BOOT_COMPLETED
- Run foreground services android.permission.FOREGROUND_SERVICE
- View network connections android.permission.ACCESS_NETWORK_STATE
Security & authenticity
Security rating: Trusted
Signing certificate
- Certificate from Google Play App Signing Google keeps the signing key for the developer, so the certificate carries Google's name.
- Same certificate as v1.4.0.8, which matches Google Play v1.4.0.8
Store checks
- Developer signature verified Jun 5, 2024
- Uploaded by “appupdater” Gold tier · 117,810 followers · uploading since 2020
Scans come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures (2 other versions compared). AAPKs doesn't scan files itself.
How to install Class 12 PCB Notes Offline on Android 4.4+
You'll need about 38.8 MB of free space.
- Download the APK — tap Download APK above (19.4 MB). Chrome shows “File might be harmful” for every APK file; choose Download anyway only if you trust this file.
- Open the file — tap the download notification, or open Files › Downloads and tap com-techzone-senior-secondarypcb-10-67818159-4975c01d1418e0d77a119bf2ea4ad5df.apk.
- Allow the install (first time only) — Android 8 and later asks for permission the first time an app opens an APK: tap Settings in the prompt, turn on Allow from this source, then go back. Manual path: Settings › Apps › Special app access › Install unknown apps (on Samsung: Settings › Apps › ⋮ › Special access). On Android 7 and older: Settings › Security › Unknown sources.
- Check the file (optional) — the MD5 of the downloaded file should be 4975c01d1418e0d77a119bf2ea4ad5df. If it differs, the file is damaged or was changed: delete it and download again.
- Tap Install — Android asks “Do you want to install this app?”. If Google Play Protect shows a warning, read it before you continue: the source store rated this file Trusted, but only install apps from sources you trust. If an earlier version is installed, this one only installs as an update when it is signed with the same certificate (SHA-1 shown above).
- Open Class 12 PCB Notes Offline — tap Open on the install screen, or find it in your app drawer.
Common install problems
- “App not installed” — a version signed with a different certificate, or a newer version, is already installed (Android doesn't allow downgrades). Uninstall it first; back up your data, because uninstalling deletes it.
- “There was a problem parsing the package” — the file is incomplete, or your Android is too old (this version needs Android 4.4+). Download it again, or pick an older version.
- Blocked by Play Protect — Play Protect checks apps from outside the Play Store. Only continue if you trust the source.