Genius Challenge - Einstein's
v6.4.64 · 26.6 MB · code 6004064
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File information
UpdatedDec 6, 2025
PublishedFeb 17, 2021
Packageair.Einstein.Challenge.SFA
Versionv6.4.64 (6004064)
Size26.6 MB
MD5f9cef039977f4b675243fff145675f0f
Min SDK21
ABIsarm64-v8a
Malware scanTRUSTED
Signature SHA108:3E:4B:39:29:5C:D4:50:C3:B5:ED:68:12:D7:9C:A3:DA:53:A6:71
SignerCN=wesam ammory, OU=EGP, O=enc, C=US
Total downloads500,000
This version500,000
DeveloperSmart Family Apps
Age ratingEveryone
Security scan
TRUSTED
- Developer signature verified 2025-12-06
- Signature SHA1 08:3E:4B:39:29:5C:D4:50:C3:B5:ED:68:12:D7:9C:A3:DA:53:A6:71
- File MD5 f9cef039977f4b675243fff145675f0f
How to install Genius Challenge - Einstein's v6.4.64 on Android 5.0 Lollipop+
Takes about 2 minutes. You'll need roughly 26.6 MB of free storage.
- Grab air.Einstein.Challenge.SFA_6004064.apk — hit the Download button above (26.6 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 f9cef039977f4b67…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find air.Einstein.Challenge.SFA_6004064.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=wesam ammory, OU=EGP, O=enc, 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 Genius Challenge - Einstein's — tap Open on the install screen, or find the Genius Challenge - Einstein's icon in your app drawer (this build targets arm64-v8a devices).
Common install errors for Genius Challenge - Einstein's
- "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.
- Works on one phone but not another — this build ships arm64-v8a native code. Devices with a different CPU will reject it.