: You must install the Flashtool drivers (found in the drivers folder within the Flashtool installation directory). During driver installation, select "Flashmode" and "Fastboot" drivers, along with the drivers for your specific phone model. Firmware : Have your desired .ftf firmware file ready. Step-by-Step Guide Extract and Install Extract the Flashtool-0.9.22.3-windows.rar archive.
(commonly known as Flashtool), a third-party utility used to manage firmware on Sony Xperia Flashtool-0.9.22.3-windows.rar