T8SG display showing weired things

Hey Guys, I am just new here!
I think i am in need of your help here. Today i received my T8SG V2 Plus from Banggood. After a bit of playing around and messing with the settings (Expo, models, etc.. i set it away for... like... five minutes - after that i had a severe Problem. The startup-display (which shows the "deviation" Logo is bisected... the upper half is black, the lower half shows the normal deviation-logo... the "homescreen" is just normal. When i press enter, it is totaly weired. You can see all this in the links to the photos.
1drv.ms/f/s!An4HXEmwh5miggxCRnE-TyKyOqIG

I tried a software update, which did change just nothing.

Thanks for your help, i hope we can solve this together.

Greetings,

Mike

Oh wow, that one was easy, thanks vlad!
Thanks alot for your help, and i thougt i can throw it in dumpster.

Greetz

Mike