Fiber Optics Loss Calculator
v1.0 · 607 KB · code 1
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File information
UpdatedNov 4, 2017
PublishedNov 4, 2017
Packagehk.lightem.linkloss
Versionv1.0 (1)
Size607 KB
MD5fa27e2fefc9e0597597534bb6fe4c58b
Min SDK11
Malware scanTRUSTED
Signature SHA127:BD:18:F0:AD:09:9F:C3:C0:C5:87:BF:65:28:D1:C7:09:F2:6A:01
SignerCN=Alvin Chau, OU=IT, O=Lightem, L=shatin, ST=NT, C=HK
Total downloads10,000
This version10,000
DeveloperLightem Technologies Ltd
Age ratingEveryone
Security scan
TRUSTED
- Developer signature verified 2020-02-11
- Scanned for malware 2020-12-05 12:08:58
- Signature SHA1 27:BD:18:F0:AD:09:9F:C3:C0:C5:87:BF:65:28:D1:C7:09:F2:6A:01
- File MD5 fa27e2fefc9e0597597534bb6fe4c58b
How to install Fiber Optics Loss Calculator v1.0 on Android API 11+
Takes about 2 minutes. You'll need roughly 607 KB of free storage.
- Grab hk.lightem.linkloss_1.apk — hit the Download button above (607 KB). 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 fa27e2fefc9e0597…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find hk.lightem.linkloss_1.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=Alvin Chau, OU=IT, O=Lightem, L=shatin, ST=NT, C=HK. 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 Fiber Optics Loss Calculator — tap Open on the install screen, or find the Fiber Optics Loss Calculator icon in your app drawer.
Common install errors for Fiber Optics Loss Calculator
- "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 API 11 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.