*** YOU NEED TO REGISTER ON THE FORUM BEFORE YOU CAN ACCESS THE DOWNLOAD LINK ***
Once you have registered you will be able to download the firmware by clicking on the orange "DOWNLOAD NOW" button.
INSTALLATION INSTRUCTIONS
http://www.xperiablog.net/2016/03/12/install-xperia-marshmallow-using-flashtool-and-xperifirm-guide/
- Download the FTF firmware file
- Ensure all drivers are correctly installed on your computer as highlighted in Part 1 of the guide linked to above
- Follow Part 3 of the guide to flash the firmware to your Sony Xperia device
XPERIA FIRMWARE DETAILS
This is official stock Sony Xperia firmware.
Model: Sony Xperia M5 (E5606)
Firmware version: 30.1.A.1.55_R6A
Region: Latin America (Generic) [1297-8189]
Android version: 5.1
Xperia M5_E5606_30.1.A.1.55_Latin America_Generic 5.1
Sony Xperia M5 (E5606) Android 5.1 firmware - Generic Latin America