*** 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 (C1605)
Firmware version: 11.3.A.3.1_R2E
Region: Central Europe 1 (Generic) [1271-7596]
Android version: 4.1.1

Xperia E Dual_C1605_11.3.A.3.1_Central Europe 1_Generic 4.1.1
Sony Xperia E Dual (C1605) Android 4.1.1 firmware - Generic Central Europe 1