When you purchase an EyeTV 4 device, it comes with a trial period that allows you to test its features. However, to access the full range of features, including HD recording, Timeshifting, and scheduling, you need to activate your device using an EyeTV 4 activation key.
If you encounter issues during the activation process or experience problems with your EyeTV 4 device, here are some troubleshooting tips: Eyetv 4 Activation Key