Problem downloading dataflash logs

Ground Control Software Mission Planner
1

Hi,

I have problems downloading dataflash logs : after my flights, I tried to download dataflash logs but it didn’t work.

This is when I tried downloading it with MissionPlanner connected to the drone with telemetry :

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image825×449 16.8 KB

This is when I tried downloading it with MissionPlanner connected to the drone with USB :

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image785×454 34.4 KB

These are my flight parameters :

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image717×243 5.37 KB

And these are the logs on my micro SD card :
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When connected to the drone with telemetry, it can find the logs, but says that the size is 0. So I tried connecting with USB (as specified in https://ardupilot.org/copter/docs/common-downloading-and-analyzing-data-logs-in-mission-planner.html), but there is an error.

I managed to get them with the SD card, but I really need to be able to download them.

Does someone had this problem already ?

P.S. : I am using Arduplane 4.0.7 and MissionPlanner 1.74