You must have the Android SDK Platform-Tools installed on your PC, which contains the Fastboot utility.
To safely perform a Sony unlock tool download and complete the process, you must use official methods to avoid bricking your device or compromising security. sony unlock tool download
Open your phone's dialer and enter *#*#7378423#*#* . Navigate to Service info > Configuration > Rooting Status . If "Bootloader unlock allowed" says Yes , you can proceed. You must have the Android SDK Platform-Tools installed
Power off your device. Hold the Volume Up button while connecting it to your PC via USB to enter Fastboot mode (the LED should turn blue). Open a command prompt and type: fastboot oem unlock 0xYOUR_UNLOCK_CODE . 2. Alternative Tools (Third-Party) Navigate to Service info > Configuration > Rooting Status
While the official method is recommended, some third-party software is used for specific scenarios, such as network unlocking or devices where the bootloader status is "No". Unlock bootloader | Developer World