VORKE Z1, KODI 16.1 to 17.1, no-go

I just received my 1st box, VORKE Z1, S912, 3GB 32GB, Android 6.0, Kodi 16.1

I’m trying to upgrade KODI 16.1 to 17.1 using:

[list=0]
[*] Google Play – no update button? I think because Google Play didn’t install the factory copy?
[*] FIle Browser to 32GB SD card with apk files, App Installer, web Browser to KODI site
[/list]

Each time it starts, runs for maybe 30 sec, then ends with X- app not installed.

In reading the web, it seems I may be trying to load the wrong version?

The S912 is 64bit. could someone point me at the correct version?

Versions tried:
kodi-17.1-krypton-arm64-v8a-apk
kodi-17.1-krypton-armeabi-v7a-apk

I have installed apps and can access the internet with0out problems.
I do have a problem with the mouse arrow, the stick and KB both need to be with 3 ft of the box&^(&^()

Thanks
JJ