You must install the Xperia Drivers found in the drivers folder of the installation directory.
Double-click the .exe file and follow the prompts. It typically installs to C:\Flashtool . Flashtool-0.9.22.3-windows.rar
Place your downloaded .ftf firmware file into the C:\Users\YourName\.flashTool\firmwares folder. Execute the Flash: Open Flashtool (use Flashtool64.exe for 64-bit systems). Click the Lightning Bolt icon and select Flashmode . Choose your firmware from the list. You must install the Xperia Drivers found in