Optic Harp
v2.0 · 5.1 MB · code 5
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File information
UpdatedSep 6, 2023
PublishedSep 6, 2023
Packagecom.kos.laserarpha
Versionv2.0 (5)
Size5.1 MB
MD5d48a55dffab1aea8e801fe2196643250
Min SDK21
Malware scanUNKNOWN
Signature SHA1E3:AD:3A:8A:6F:CB:2B:B2:DF:69:36:E0:8B:D4:4A:60:37:A5:B0:44
SignerCN=Kos Mus
Total downloads500
This version500
DeveloperKonstantin Musikhin
Age ratingEveryone
What's new in v2.0
Android 10 support, performance improved
Security scan
UNKNOWN
- Developer signature verified 2023-09-06
- Signature SHA1 E3:AD:3A:8A:6F:CB:2B:B2:DF:69:36:E0:8B:D4:4A:60:37:A5:B0:44
- File MD5 d48a55dffab1aea8e801fe2196643250
How to install Optic Harp v2.0 on Android 5.0 Lollipop+
Takes about 2 minutes. You'll need roughly 5.1 MB of free storage.
- Grab com.kos.laserarpha_5.apk — hit the Download button above (5.1 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 d48a55dffab1aea8…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find com.kos.laserarpha_5.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=Kos Mus. 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 UNKNOWN).
- Done — open Optic Harp — tap Open on the install screen, or find the Optic Harp icon in your app drawer.
Common install errors for Optic Harp
- "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.