Before using the tool, ensure you have completed these steps on your Redmi Note 8 : Sign in to your Mi Account on the device.
: Open the Mi Unlock Tool on your PC, sign in with the same Mi Account used on your phone, and connect your device via USB. Before using the tool, ensure you have completed
: Navigate to Additional Settings > Developer Options , enable OEM unlocking and USB debugging , then tap Mi Unlock status and select Add account and device (this requires mobile data). Before using the tool