How to open a CSV file from a device DEKUNU in the FlySightViewer program?
Copy the file from the Dekunu into your laptop, then have a look at GitHub - ColOfAbRiX/dekunu-flysight-fix: Fix in the export of Flysight CSV from Dekunu
But you won’t get much out of it, the raw data is inaccurate at best. It won’t be of much use, but give it a try