Step 3: Download HyperSploit
PS: after downloading the exe file, put it in the platform tools folder for it to be alongside adb.exe and other useful files. this is required, btw.
Step 4: Give Permissions
Enable USB Debugging and OEM unlocking and Install via USB in Developer Options.
to Get Developer Options, Spam OS version in about device settings page.
Step 5: Run HyperSploit
Run the HyperSploit EXE file and Select your device and Continue with the Steps in the Terminal.
Step 6: Hard Part
Wait 7 Days.
yes, im serious.
after thats done, download the Latest Mi Unlock Tool Online and Log into your xiaomi account.
after that, put the device in fastboot mode (while shut down, hold power+vol down) and press continue in the mi unlock tool.
Voila!
WARNING: the mi unlock tool should look like this: