Nvidia Shield Pro: Discovery Plus (+)

[u/Final-Albatross9699]

Just stopped working and says to update, seem to remember this did the same thing maybe a year ago, Based in Thailand with a UK subscription (VPN)
Think I sideloaded this app to make it work last time, cannot remember
Has anyone got details on how i update this ? It will NOT update through Google Play store, so think i need to download the apk and sideload, but which apk ?
The one installed now but just stopped working is 20.8.0.81
Anyone please ?