Help How to stop update notifications

[Kaguro]

Hello everybody. I have a Lenovo k8 plus. It is almost a perfect phone except for one thing: it constantly keeps on showing me update notifications about 50-60 times a day full screen. It draws over other apps and many times interrupts and causes problems with other apps that were running...

It is very annoying and I have no idea how to disable these full screen notifications. Any help?

 

[Hadron]

What sort of updates are these? I've never known a phone be that in your face about system updates, but this is not the behaviour of the Play Store (app updates) either.

 

[Kaguro]

Like these. These are almost monthly and are of ~0.6GB in size. It wants me to keep updating till the current date from the day the phone was created ( maybe sept 2017)

I updated quotea few times and then also upgraded to Android 8 with this. But still these updates don't cease...