*** YOU NEED TO REGISTER ON THE FORUM BEFORE YOU CAN ACCESS THE DOWNLOAD LINK ***
INSTALLATION INSTRUCTIONS
http://www.xperiablog.net/2015/03/17/guide-to-installing-xperia-lollipop-using-xperifirm-and-flashtool/
- Open link above and skip to the section entitled “FlashTool steps”.
- As you have already downloaded the FTF firmware file, skip to the section where you need to “Flash device”.
XPERIA FIRMWARE DETAILS
Model: Sony Xperia E Dual (C1604)
Firmware version: 11.3.A.3.1_R3E
Region: US (Generic) [1269-0380]
Android version: 4.1.1

Xperia E Dual_C1604_11.3.A.3.1_US_Generic 4.1.1
Sony Xperia E Dual (C1604) Android 4.1.1 firmware - Generic US