Xiaomi released beta version of Mi Flash tool few days ago. New version of Mi Flash tool makes the fast boot ROM flashing process quite easier.
The latest version brought a noticeable changes over its previous version. In latest version, flash button will be not functioning if your device is not connected. Some minor changes in UI, force close problem and error pop up are also solved.
How to install Mi Flash tool:
After downloading unzip it and double click on MiFlash.exe. Installation process will begin like below picture. Click Next.
Define the installation path if you want custom location installation and click “Next”.
Then confirm installation Mi Flash tool by clicking “Next”.
Installation process will begin and wait until it down. After completion click “Close”.
Now Mi Flash is successfully installed on your PC. Click Mi Flash tool from your app list to launch the tool.