Today (09/09/2018) i update to MIUI 8.9.6 and 10/12 hours later the phone did a reboot... then after this it started to reboot every 2/3 minutes... first it frezzes and then it reboot... i tried to downgrade to MIUI 8.8.30 but nothing changed. I've also noticed that WiFi shows no available connection (but i'm sitting next to my router and my pc is connected to it) and bluetooth restart itself but for the time it is turned on it works. That's all i know... Can someone help me fixing this?