Reading the H520 telemetry flightlogs with Qgroundcontrol (English version) 

You can connect the H520 directly to PC with qGC and download the logs from there. I'm finding that on my Windows PC the transfer speeds are awfully slow, like 100kb/s (and 25 min flights logs are 25mb).

Thanks for sharing this. I see RU-vid put it in the "Comedy" category. That is funny...