The original firmware package for the Enter E-260u was engineered for legacy Windows operating systems. Use this compatibility matrix to guide your deployment: Operating System Compatibility Status Required Action Fully Supported (Native) Standard installation via USB_TV_Stick.exe . Windows 7 Fully Supported Run the setup file as an Administrator. Windows 8 / 8.1 Partial Support Requires disabling Driver Signature Enforcement. Windows 10 / 11 Legacy / Restricted Must use Compatibility Mode for Windows 7. Troubleshooting Common Issues Missing Digital Signatures (Windows 10 & 11)