Update Incompatible?

I’ve been trying to make the update to krypton 17.1 on my Android box. I currently have Jarvis 16 or whatever, it’s been prompting me to make the update. I’ve had this box for a few months now so it’s fairly new, I wouldn’t think it’s out of date but I don’t know that for sure. I followed their “newbie” instructions to updating but I am stuck at downloading the actual update. I tried the google play store first and it automatically says my device isn’t compatible. They have another update link so I tried that, it downloaded but when I open Kodi it’s still build 16. I can’t find much on my exact situation yet so I thought I’d ask here. Thanks for the help.