: On your computer, download the official Android Platform Tools (which include adb and fastboot commands) from the Android developer website and extract the ZIP file to a folder (e.g., C:\platform-tools ).
Follow the on-screen instructions, which will prompt you to connect your phone while holding the button. sony unlock tool download
To help you move forward with your device, please let me know: What is the exact of your Sony Xperia device? : On your computer, download the official Android
While holding the button, connect the phone to your computer via the USB cable. : On your computer