Xperia™ Companion is a computer tool for easy and safe software updates of your Xperia™ device. Use it to update to the latest software version, back up and restore your device, or to reset your device by clearing the content. You can also browse, sync, transfer, and organize your content, such as multimedia files.
Download the installation package to a temporary folder on your PC.
Run the downloaded file, and follow the on-screen instructions.