| Problem | Solution | |---------|----------| | Software doesn't detect device | Disable Windows Firewall for the software. Ensure device IP is on same subnet as PC. | | "Communication Error" | Use first to test. Change baud rate to 115200. | | Installer won't run | Right-click → Properties → Unblock (Windows protected PC). | | Database connection fails | Reinstall and choose "SQLite" (no separate server needed). |
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