Jailbreaking an Apple TV is a process that allows you to remove the restrictions imposed by Apple on its devices. This process can be done using a tool called Cydia Impactor and a jailbreak file like ChimeraTV jailbreak file or liberTV jailbreak file. Here are the steps to follow:

1. Download Cydia Impactor and the ChimeraTV jailbreak file on your Mac or PC.
2. Connect your Apple TV to your Mac or PC using a USB-C to USB-A cable.
3. Open Cydia Impactor and drag and drop the ChimeraTV jailbreak file onto it.
4. Enter your Apple ID and password when prompted.
5. Wait for the installation process to complete.
6. Once installed, go to Settings > General > Profiles & Device Management on your Apple TV.
7. Find the profile associated with the ChimeraTV jailbreak and tap on it.
8. Tap on "Trust" when prompted.
9. You can now use your jailbroken Apple TV.

Please note that jailbreaking your Apple TV may void its warranty and could cause issues with future updates. Also, please be aware that jailbreaking is not illegal but it does violate Apple's terms of service.