XperiFirm Tool is a small yet powerful tool that allows you to download Stock firmware for almost any Sony Xperia Smartphone and Tablets.
Xperifirm requires .Net Framework and Sony USB Drivers installed on a Windows PC. It is required that you have proper Sony USB Driver installed on your computer. It allows Xperifirm Tool to detect the device and download the suitable firmware.
Download XperiFirm – Xperia Firmware Downloader