So, it came to my attention a few days ago that while people had been saying they had success installing Kodi with Impactor, that was on iPads, not AppleTVs, and no one ever bothered to tell me that Impactor was failing to correctly sign Kodi for the AppleTV :/. I went out and got an AppleTV 4 this morning so I could be sure I got this right: the latest version of Impactor should let you install Kodi from Windows.

(Note that you need to extract the .deb, rename Applications to Payload, and then compress the result back to a .zip, which is really all an IPA file is: a .zip file with a .app inside of a folder called Payload. I hesitate to directly add support to install system application .deb packages as user applications, as then people will expect it to work for packages like iFile or Cydia Installer... maybe some day Kodi will ship an IPA file.)

FWIW, this might still fail in some corner case: I have no clue how to use Kodi... I'm just verifying that most of the files look right on disk and that the app starts. If there's anything broken, please tell me here, so I can fix it. The only thing I sort of expect to break (and I'd love it if someone could tell me how to tickle this into breaking in practice so I can test it) is that I'm not signing the handful of .so files inside of the Python .egg files.