Enable this in your phone's Developer Options .
Download the installer and run it. By default, it installs to C:\Flashtool . Once installed, go to the drivers folder and install the drivers for your specific phone model, as well as "Fastboot" and "Flashmode" drivers. 2. Sourcing Firmware Flashtool-0.9.18.6-windows
Flashtool is the Swiss Army knife for Sony Xperia devices. In this version, it is primarily used for: Enable this in your phone's Developer Options
Using Flashtool involves low-level write operations. Keep these rules in mind: Flashtool-0.9.18.6-windows