Downloading "Box9" or other versions from unofficial sites carries risks. APKs from outside the Play Store can contain malware or adware.

If you are looking to install this on a TV box, you can follow these standard procedures:

Multiple "Dark TV" applications exist, mostly focused on movie and live TV streaming:

Experts recommend using a VPN when using third-party streaming apps to protect your IP and personal information. Installation Guide for Android TV Boxes