Can't Unlock My Bootloader: "can't Get Info, Connect Again"

[paololop990]

Hi! I've bought a Mi 4i and I'm trying to unlock it in order to install the xiaomi.eu version. I obtained the authorization, and I've installed the latest China Developer, but still I can't get to unlock the phone. Mi unlock said me: "can't get info, connect again"!
Could you help me?
Thanks guys