Download the Flashtool 0.9.18 software from the official website and install it on your computer.
Select the firmware you want to flash, backup, or restore. flashtool 0.9.18
Use Flashtool 0.9.18 at your own risk. Make sure to backup your device's data before flashing any firmware. We are not responsible for any damage caused to your device. Download the Flashtool 0
Connect your Xperia device to your computer using a USB cable. flashtool 0.9.18
Wait for the flashing process to complete. This may take several minutes.