Z64 best Android

Hi everybody, I'm new here but I have been playing around with my Z64 for a while (3 years). I want to install the latest version available of Android (and the original Minix Launcher). He used this box for streaming and it came with Win 8.1.
A couple of yeras I was tired of Win OS and I installed Ubuntu, but I didn't like it (I was mainly using Kody and Acestream at that time) so I went back to Win OS installing Win 10. About 6 months I purchased another Minix box running Android, I also started to use mag emulators for streaming and I love it. So I decided to install Android on mi old Z64 and I successfully installed a 7.0 version, but I don't like it It doesn't work properly (some apps force the screen to rotate as Tablet) and there is no way to build a decent Launcher. So here I'm asking for help. Is it possible to find the latest Android version available for Z64 as Iso file? Thanks.