Lot of thanx for your advice. I swiched to adb driver v7.0 and i managed to unlock bootloader. I applied 8 days ago for unlocking but i have not received the second sms, that validation sms from Xiaomi. Now i will install TWRP, SupesSU and i will update from MIUI 8.3 v7.2.16 to v7.2.23/24 on my...