Hello mimilazarevic1992,
I went through all of our discussion again. And I'm really sorry that I might have missed something.
You download Win10 from Windows website, right?
So you were not using the factory OS, but the open platform one........
If so....that's the reason......why the upgrade tool has been failing...
Please kindly send your device to service center to reinstall the factory OS back,
please make sure that you clarify that the screenpad has been upgraded before.
I'm really sorry for all the inconvenience casued.
Thank you so much.