FS Theorie
v3.0.0 · 3.1 MB · code 75
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File information
UpdatedDec 4, 2025
PublishedJun 12, 2021
Packagede.wirfahrlehrer.easytheory
Versionv3.0.0 (75)
Size3.1 MB
MD54b7afd25ea175f5e6b2124ee59c4e352
Min SDK21
Malware scanTRUSTED
Signature SHA13F:65:AE:4B:C6:73:D6:25:2D:D1:2B:DB:53:13:C1:B6:ED:4D:00:88
SignerO=wirfahrlehrer
Total downloads100,000
This version100,000
Developerwirfahrlehrer Gemeinschaft WFG GmbH
Age ratingEveryone
What's new in v3.0.0
Fehlerbehebung
Viel Erfolg beim Lernen wünscht euch das Team der wirfahrlehrer Gemeinschaft.
Viel Erfolg beim Lernen wünscht euch das Team der wirfahrlehrer Gemeinschaft.
Security scan
TRUSTED
- Developer signature verified 2025-12-04
- Signature SHA1 3F:65:AE:4B:C6:73:D6:25:2D:D1:2B:DB:53:13:C1:B6:ED:4D:00:88
- File MD5 4b7afd25ea175f5e6b2124ee59c4e352
How to install FS Theorie v3.0.0 on Android 5.0 Lollipop+
Takes about 2 minutes. You'll need roughly 3.1 MB of free storage.
- Grab de.wirfahrlehrer.easytheory_75.apk — hit the Download button above (3.1 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 4b7afd25ea175f5e…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find de.wirfahrlehrer.easytheory_75.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 O=wirfahrlehrer. 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 FS Theorie — tap Open on the install screen, or find the FS Theorie icon in your app drawer.
Common install errors for FS Theorie
- "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.