Need Updated ROM for Chuwi Hi9 Air

I’d like to find out where I can download the rumored as, “available update to Android OS 9 (Pie)” for my Chuwi Hi9 Air?
Google Play is not allowing me to download many apps and many I do download “not optimized for your device” fail to work. Even some updates of apps fail after updating.
I paid good money for my tablet: Can’t I get an update for the outdated Android 8 (Oreo)?