Hi,
Thank you for the fast replay.
I read some post of other user, so I had:
1) Installed adb/fastboot (1.4.2 t0olkit) on pc;
2) Downloaded TWRP 3.0 for Cancro on pc;
3) Download the version Miui 7.3 (6.3.17) EU on directory of MI4;
4) Put phone in Fastboot mode (Turn off, and boot presing...