Step 2: If you have 2nd or 3rd generation Apple TV, press and hold the "Menu" and "Volume Up" button for about 5 seconds. The Apple TV resolution will start changing every 20 seconds, select "OK" when the required resolution comes on. You can select "Cancel" to quit the resolution change. Method 4. Restart Your Apple TV
I understand your Apple TV needs to be restored. The following article provides the method to restore via iTunes: Restore your Apple TV (2nd and 3rd generation) - Apple Support. Restore your Apple TV in iTunes. For this process, which installs the latest software and reverts the device to factory settings, you'll need: A micro-USB cable (sold
Once it’s powered on, navigate to the Settings app using your remote. Click Settings, then navigate to the “General” tab. Click this tab, then navigate to the option that reads “Reset.”. Select this option, then wait for the following prompts to appear: “Reset All Settings” or “Restore.”. Follow the steps that vazandrew linked. Apple TV (3rd generation): Connect one end of the micro-USB cable to the back of your Apple TV, and the other end to one of your computer's USB ports. Connect the power cable from your Apple TV to a power outlet. In my experience you may need to unplug and plug the power back in once or twice, though Second and Third Generation Apple TVs come with an aluminum remote. (Photo Credit: Apple.) Note: If you have an Apple TV 4K, you may not be able to reset the firmware on your own.