Hello . After upgrade of my arducopter from 4.0.1 to the last 4.0.3 , I receive the error message "Prearm: logging failed . Moreover , trying to access the logs with the button “Download Dataflash logs …” , the system tells me there are anything on the SD card, when in fact it contains old recorded logs.
I got around the problem by removing the option “Logging available” in the ARMING_CHECK to make a flight , but no logs has been recorded.
Returning to the 4.0.1 is okay , the message is gone and I can see my old logs.
I specify that I use a pixhawk 2.4.8.
But the problem is that without correcting this error of this new version, it’s not recommended to upgrade and fly safe without being able to analyze the incidents.