MIUI 8 N9005/KS01LTE 6.12.24
We really need an update here... :-/
I think it really is time to give an update, or at least some feedback on how are things going. ;-/
Polish language not exist :( and too many chinas signs
Do initial setup in English (US), then from Google Play Store install "Morelocale 2". Then run this app, and search for "pl_PL". Single-tap it, and exit the program. Polish language should be...
It appears, that the bottom board / usb charging board was damaged. After replacing the device mounts as expected.