| Problem | Solution | |---------|----------| | Device not recognized in fastboot | Install Xiaomi USB Driver, use USB 2.0 port, try different cable | | “ADB device unauthorized” | Accept RSA fingerprint on phone screen | | MTK USB Port appears briefly then disappears | Driver signature disabled (Windows 10/11) → Reboot PC with “Disable Driver Signature Enforcement” | | MTP not showing files | Uninstall MTP driver in Device Manager → Reboot & reconnect |