It should be noted that only signed versions of the IPSW files below can be restored using iTunes or 3utools. IPSW, iPhone Software, is a file format used to install iOS, iPadOS, tvOS, HomePod, and most recently, macOS firmware for devices equipped with Apple silicon.
Download iTunesApple TV 4K
AppleTV6,2
Apple TV 4 (2015)
AppleTV5,3
Apple TV 3 (2013)
AppleTV3,2
Apple TV 3
AppleTV3,1
Apple TV 2G
AppleTV2,1
IPSWDL.COM is a website that provides download links for IPSW files, which are used to install or restore firmware on Apple devices. These files are sourced directly from Apple's servers.