Lowrance my map

I am looking for a programmer to build a Windows executable program that will load my Sonar recorded file in format .sl2 and convert it into a same name file Lowrance Hook 7 readable file in format (.AT5). Lowrance has a system of doing this job but mainly for lakes. It is called Insight Genesis. You upload the sonar recording file (.sl2) to their system in the cloud and supposedly they should return a downloadable file (.AT5) that is readable by the GPS fish finder unit (Lowrance Hook 7) with a detailed contour of your sounding. For my area, this doesn't work. Hence me looking for an executable program to replace the Lowrance cloud system. In attachment I include one sample sonar recorded file (.sl2) and a sample of a Lowrance Hook 7 readable file (.AT5) The executable program must ask for the origin folder and file name to be converted and destination folder.