My Android box does not support Kodi 17

I just bought a TX3 Pro box and when I turned it on it did not have Kodi installed. I tried everything that I’ve seen on YouTube, but every time I try to download Kodi 17, it tells me that the app could not be installed. I’m trying to find Kodi v16.1, on he Kodi site, but it only has Kodi 17. Can someone help me, thanks?!