Unlock your xiaomi device bootloader on any os (Windows/Linux/Mac)! (by Franesco Tescari)
PLEASE NOTE: This tool was not supported as it was implemented is the new XiaoMiTool V2.
MiUnlockTool is outdated, you can use XiaoMiTool V2 to unlock your device cross platform
Tool description and info yet to come, just download link for now.