Download 502so | 340 R13c Remove Lock Ftf

: The tool will begin writing the firmware. Do not disconnect until the process is marked as finished. Alternative Official Recovery

: Download the latest version of Sony Flashtool to handle the .ftf file. Download 502SO 340 R13C Remove Lock ftf

Hold the button while connecting it to the PC via USB. The LED should turn green (Flashmode). : The tool will begin writing the firmware