Sony Xperia F3115 Stock Firmware (flash file) download from below direct link.
Download contains Firmware, Flash Tool, Driver and Instructions.
Model: Sony Xperia XA F3115.
Flash Tool: Sony Mobile Flasher.
Download
Sony Xperia XA F3115 – Download
How to flash
Click here to view complete flashing instructions.
Firmware Information
Software Version: F3115_33.2.A.3.81_1302-4361_Customized_AU
Android Version: v6.0.1