Quadrotor Crashes When Switched from Stabilize to Hold

My team and I recently had a crash after changing flight modes from Stabilize to Hold. We suspect that the crash occurs when we switch from a manual mode to an auto mode. This is because we were able to switch between Stabilize and Position modes without any problems as well as between Position and Hold. However, when switched from Stabilize to Hold directly, the drone crashed. The drone also crashed when switched from RTL to Stabilize

Information about the drone:

-Quadcopter DJI F450
-Pixhawk flight controller
-PX4 version 1.9.1

The flight logs from the crash:
Stabilize to Hold:

If anyone can help us with this issue it will be really appreciated.

1 Like

Thanks for the report. This is quite strange, I can’t see what’s wrong just yet. @tumbili do you see something?

@JulianOes Thank you for your response.

I would like to point out that the drone was initially working with this firmware version (1.9.1). We then upgraded to 1.9.2; however, we faced some issues with the geo-fencing system that we were testing so we decided to downgrade back to 1.9.1 version. We did this by downloading the [px4_fmu-v2_default.px4] file from https://github.com/PX4/Firmware/releases/tag/v1.9.1 and uploaded it using the custom firmware option from QGroundControl. We were not sure whether the way that we downgraded the firmware with was done correctly or not.

According to the logfile the version is 1.9.1, so that’s fine.