FKR
v5.2.0 · 3.8 MB · code 520
Verify you're human
Solve this to start the download.
File information
UpdatedNov 7, 2025
PublishedJul 21, 2023
Packagede.fkr.mobile
Versionv5.2.0 (520)
Size3.8 MB
MD52e5eeb2c5cb7df958793819547bb83fa
Min SDK24
Malware scanTRUSTED
Signature SHA13A:30:C1:EB:A6:34:AD:D4:B5:E9:5E:50:A0:F8:3D:29:29:01:68:C3
SignerCN=Alex Kemmer, O=Cordes & Grafe KG, L=Stuhr, C=DE
Total downloads1,000
This version1,000
DeveloperGC-GRUPPE
Age ratingEveryone
Security scan
TRUSTED
- Developer signature verified 2025-11-07
- Signature SHA1 3A:30:C1:EB:A6:34:AD:D4:B5:E9:5E:50:A0:F8:3D:29:29:01:68:C3
- File MD5 2e5eeb2c5cb7df958793819547bb83fa
How to install FKR v5.2.0 on Android 7.0 Nougat+
Takes about 2 minutes. You'll need roughly 3.8 MB of free storage.
- Grab de.fkr.mobile_520.apk — hit the Download button above (3.8 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 2e5eeb2c5cb7df95…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find de.fkr.mobile_520.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=Alex Kemmer, O=Cordes & Grafe KG, L=Stuhr, C=DE. 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 FKR — tap Open on the install screen, or find the FKR icon in your app drawer.
Common install errors for FKR
- "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.