I hard-bricked my Xiaomi mi5 and I'm pretty angry.
Unlocking bootloader was fine.
After that, I tried to flash the ROM using the method 2. But after several tries with minimal adb and fastboot, TWRP dind't got installed. And my phone won't boot into the old ROM anymore, so I soft-bricked it here.
I downloaded TWRP from the official page and installed it via Fastboot. This time worked great, so I suppose that the TWRP in the main post is not working OK.
Finally, I installed XIaomi.eu Stable 7.2.13.0 for TWRP, and after the reboot, my phone got hard bricked.
What the hell I did wrong? I can't go into recovery or fastboot, the device doesn't show up anything on the screen.