CylancePROTECT
v2.21.0.4259 · 62.9 MB · code 4259
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File information
UpdatedDec 8, 2025
PublishedJun 22, 2022
Packagecom.blackberry.protect
Versionv2.21.0.4259 (4259)
Size62.9 MB
MD5a745c6a192fc236963fd43c2800c1025
Min SDK30
ABIsx86-64, armeabi-v7a, arm64-v8a
Malware scanTRUSTED
Signature SHA1BD:70:F3:8C:B2:5D:C8:B5:2B:6B:CC:19:17:E6:8E:66:07:8E:9A:F7
SignerCN=Regen
Total downloads10,000
This version10,000
DeveloperBlackBerry Limited
Age ratingEveryone
What's new in v2.21.0.4259
Bug fixes.
Security scan
TRUSTED
- Developer signature verified 2025-12-08
- Signature SHA1 BD:70:F3:8C:B2:5D:C8:B5:2B:6B:CC:19:17:E6:8E:66:07:8E:9A:F7
- File MD5 a745c6a192fc236963fd43c2800c1025
How to install CylancePROTECT v2.21.0.4259 on Android 11+
Takes about 2 minutes. You'll need roughly 62.9 MB of free storage.
- Grab com.blackberry.protect_4259.apk — hit the Download button above (62.9 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 a745c6a192fc2369…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find com.blackberry.protect_4259.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=Regen. 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 CylancePROTECT — tap Open on the install screen, or find the CylancePROTECT icon in your app drawer (this build targets x86-64/armeabi-v7a/arm64-v8a devices).
Common install errors for CylancePROTECT
- "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 x86-64/armeabi-v7a/arm64-v8a native code. Devices with a different CPU will reject it.