from a few days ago, whenewer i turn my mi band(5) on, it shows a screen, that sais ‘udate’ but it never changes. what can i do abaut that?

Please help me after i flashed eu rom and i had all setup my phone was running fine after that i restarted my phone then lockscreen came again after then it started booting again and again (auto rebooting)

Whenever I try to replace my wallpaper, whether I do it from the gallery or the themes app, it tells me that if I replace my wallpaper I have to go back to the MiUI theme. How do I keep ...