Mi4c Doesn't Work After Update To Miui9 Stable


Dec 13, 2017
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I have a Xiaomi MI4c, and yesterday I did the update to MIUI9 stable version. The ROM was downloaded from this site and, as I have always done with the previous updates, I downloaded the zip file, copied it into my phone and then did the update via Xiaomi updater app.
After the upload, the phone wouldn't turn on. In particular, if I try to turn it on, the MI logo is shown on the screen, and then it turns off. If I charge the phone, the MI logo appears for about 10 seconds, then the phone switches off again, and it keep showing the MI logo and switching off continuously.
I have tried to press power button + volume up to access TWRP recovery, and in that case, the phone continues to show the MI logo and switch off.

Does anyone know how i can fix this problem?

Thanks,

Gianluigi