Proper drivers are essential for Windows 8.1 to recognize your phone in ADB or Fastboot mode.
If the tool won't open, ensure you don't have multiple conflicting versions of Java installed. xiaomi adb fastboot tools download for windows 8.1
This must be enabled in the "Developer Options" on your Xiaomi device. How to Download and Install Proper drivers are essential for Windows 8
Plug your phone into your Windows 8.1 PC using a high-quality USB cable. How to Download and Install Plug your phone
Xiaomi ADB Fastboot Tools is a versatile, Java-based software designed to bridge the gap between your Windows 8.1 PC and your Xiaomi, Redmi, or Poco device. Unlike the standard command-line tools that require memorizing complex syntax, this utility provides a clean, graphical user interface (GUI) to manage your phone's deep settings.
Flash ROMs, recoveries (like TWRP), or boot images with a few clicks.