Lost All parameters suddenly after flight finished

Hi everyone, just finished some test flight and connect quadcopter to mission planner found all configured parameters rest to default values and all calibration rest is this normal to happen and what maybe root cause of such dangerous issue.

It may be helpful to pull out the SD Card, zip up the contents and upload that to a filesharing service for someone to check.

You can get all the parameters back from the last good .bin log, or if you recently connected to MissionPlanner there may be a .param file in the log directory.
Let us know if you need help with that.


I check the log file Nothing there normal parameters and I pull out the parameters from bin file and restore the situation but I want to know what maybe the root causes for such cases.

We can only tell from the SD Card contents, maybe…

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