Ok, hm, so some things you could probably try (the more down you go, ~the more invasive the methods are):Thanks for your very quick response. I understand that it‘s a bit late today . It would be wonderful if you could help me tomorrow because I have a big problem if this phone is waste…
(Also flash the latest MB twrp, here.) And search the error it gives you.
1)Reboot normally and see what happens.
2)Download the rom again and flash it. Then reboot.
3)Do wipe data and reboot normally.
4)Flash the rom and wipe data. Then reboot.
5)Flash stock rom with mi flash tool (~haven't tried it).
6)Boot into edl and take it to a repair shop with a certified edl account, to ~completely format your phone back to it's ~original state. Boot into edl after you find a shop.