*** 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 C (C2305)
Firmware version: 16.0.B.2.16_R8A
Region: India (Generic) [1276-3349]
Android version: 4.2.2

Xperia C_C2305_16.0.B.2.16_India _Generic 4.2.2
Sony Xperia C (C2305) Android 4.2.2 firmware - Generic India