REDCOM Sigma Client
v6.3.1 build 45 · 99.2 MB · code 851
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File information
UpdatedApr 7, 2026
PublishedMar 20, 2021
Packagecom.redcom.sigma
Versionv6.3.1 build 45 (851)
Size99.2 MB
MD5d2be376fc0a1da49a969ce10e0ebdcfa
Min SDK30
ABIsx86, x86-64, armeabi-v7a, arm64-v8a
Malware scanTRUSTED
Signature SHA147:74:C5:89:4E:CC:83:90:51:89:31:91:50:A6:35:40:59:8F:A1:8B
SignerCN=Staff Engineer, OU=Product Release Control, O="REDCOM Laboartories, Inc.", L=Victor, ST=New York, C=US
Total downloads1,000
This version1,000
DeveloperREDCOM Laboratories
Age ratingEveryone
What's new in v6.3.1 build 45
Minor bug fixes
Security scan
TRUSTED
- Developer signature verified 2026-04-07
- Signature SHA1 47:74:C5:89:4E:CC:83:90:51:89:31:91:50:A6:35:40:59:8F:A1:8B
- File MD5 d2be376fc0a1da49a969ce10e0ebdcfa
How to install REDCOM Sigma Client v6.3.1 build 45 on Android 11+
Takes about 2 minutes. You'll need roughly 99.2 MB of free storage.
- Grab com.redcom.sigma_851.apk — hit the Download button above (99.2 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 d2be376fc0a1da49…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find com.redcom.sigma_851.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=Staff Engineer, OU=Product Release Control, O="REDCOM Laboartories, Inc.", L=Victor, ST=New York, 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 REDCOM Sigma Client — tap Open on the install screen, or find the REDCOM Sigma Client icon in your app drawer (this build targets x86/x86-64/armeabi-v7a/arm64-v8a devices).
Common install errors for REDCOM Sigma Client
- "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 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.
- Works on one phone but not another — this build ships x86/x86-64/armeabi-v7a/arm64-v8a native code. Devices with a different CPU will reject it.