Challengeeos
v8.0.9 · 34.1 MB · code 39
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File information
UpdatedNov 4, 2023
PublishedMar 27, 2021
Packagechallengedac.com.challenge_dac_app
Versionv8.0.9 (39)
Size34.1 MB
MD5def1bd739b0ce279646a8c2cbc4483c0
Min SDK21
ABIsx86-64, armeabi-v7a, arm64-v8a
Malware scanTRUSTED
Signature SHA1FD:21:69:7E:A1:EA:22:5F:A4:C1:3A:D2:00:DD:C1:E8:04:CB:83:54
SignerCN=quoc huynh, OU=challengeapp, O=challengeapp, L=vietnam, ST=tphcm, C=vn
Total downloads1,000
This version1,000
DeveloperChallenge Dac
Age ratingEveryone
What's new in v8.0.9
- improve performance and fix bugs
Security scan
TRUSTED
- Developer signature verified 2023-11-04
- Signature SHA1 FD:21:69:7E:A1:EA:22:5F:A4:C1:3A:D2:00:DD:C1:E8:04:CB:83:54
- File MD5 def1bd739b0ce279646a8c2cbc4483c0
How to install Challengeeos v8.0.9 on Android 5.0 Lollipop+
Takes about 2 minutes. You'll need roughly 34.1 MB of free storage.
- Grab challengedac.com.challenge_dac_app_39.apk — hit the Download button above (34.1 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 def1bd739b0ce279…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find challengedac.com.challenge_dac_app_39.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=quoc huynh, OU=challengeapp, O=challengeapp, L=vietnam, ST=tphcm, C=vn. 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 Challengeeos — tap Open on the install screen, or find the Challengeeos icon in your app drawer (this build targets x86-64/armeabi-v7a/arm64-v8a devices).
Common install errors for Challengeeos
- "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 x86-64/armeabi-v7a/arm64-v8a native code. Devices with a different CPU will reject it.