SmartTube Error Code 152-18 | Quickest Fix

The Error Code 152-18 in SmartTube (formerly SmartTubeNext) is typically a playback error linked to outdated app versions or a corrupted local cache.

Because the developer recently had to change the app’s digital signature for security reasons (late 2025/early 2026), older versions of the app have stopped working and cannot auto-update correctly.

🛠️ Step 1: Clear Cache and Storage (The Quickest Fix)

Many users on GitHub have reported that clearing the app’s internal storage resolves the “Video Unavailable” loop that triggers this error code.

1. Go to your device Settings (Gear icon on your Android TV/Fire Stick).

2. Select Apps > SmartTube.

3. Select Clear Cache and then Clear Data (or Clear Storage).

4. Force stop the app and restart it.

   • Note: You may need to log back into your YouTube account after doing this.

🛠️ Step 2: Perform a Clean Reinstall (Required for Security)

If Step 1 doesn’t work, you are likely on a version with the old, revoked signature. The app cannot “see” new updates if the signature doesn’t match.

1. Uninstall your current version of SmartTube entirely.

2. Go to the official SmartTube GitHub using a browser (like Downloader on Fire Stick).

3. Download the latest Stable or Beta APK.

   • Pro Tip: If the 64-bit version (arm64-v8a) gives you a “not compatible” error, try the 32-bit version (armeabi-v7a). Many modern TV boxes are running 32-bit Android OS even if the processor is 64-bit.

🛠️ Step 3: Check Device Time/Date

The “18” in the error code sometimes points to a handshake failure between the app and YouTube’s servers.

• Ensure your TV/Fire Stick is set to “Automatic Date & Time.”

• If your device clock is even a few minutes off, YouTube will reject the video request for security reasons.

⚠️ A Note on Google Play Protect

You might see a warning from Google Play Protect saying the app is “unsafe.” This is because the developer’s original key was leaked, and Google flagged the old signature.

As long as you download directly from the yuliskov GitHub, the new version is safe to use—just select “Install anyway” or temporarily disable Play Protect scans in the Play Store settings.