*** 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
This is official stock Sony Xperia firmware.
Model: Sony Xperia J (ST26i)
Firmware version: 11.2.A.0.33_R5E
Region: Middle East (Generic) [1271-1970]
Android version: 4.1.2

Xperia J_ST26i_11.2.A.0.33_Middle East_Generic 4.1.2
Sony Xperia J (ST26i) Android 4.1.2 firmware - Generic Middle East