PreArm:CrashDump data detected

ArduCopter Copter 4.6
1

While downloading logs from my quadcopter UAV equipped with a Cube Orange+ flight controller, I encountered the error “PreArm: CrashDump data detected.” Could anyone please advise on how to resolve this issue? Also, is it safe to fly the UAV after resolving this error?

06-02-2026 14:11:38 : Frame: QUAD/H

06-02-2026 14:11:38 : IMU2: fast hi-res sampling 1.6kHz/3.2kHz

06-02-2026 14:11:38 : IMU1: fast hi-res sampling 1.6kHz/3.2kHz

06-02-2026 14:11:38 : IMU0: fast sampling 1.6kHz/3.2kHz

06-02-2026 14:11:38 : RCOut: PWM:1-14

06-02-2026 14:11:38 : IOMCU: 420 1001 411FC231

06-02-2026 14:11:38 : CubeOrangePlus 00350040 31335104 38393730

06-02-2026 14:11:38 : ChibiOS: 88b84600

06-02-2026 14:11:38 : ArduCopter V4.6.2 (1ebd4d99)

06-02-2026 14:11:38 : PreArm: CrashDump data detected

Crash dump file from MAVftp is available on below mentioned link. https://drive.google.com/file/d/1ahtp7CUFmtnfJtqGc_HbJk3z9x3gMIi_/view?usp=sharing

2

Hi @aniket2025,

Thanks for the report and sorry for the troubles.

We think we’ve resolved this issue in 4.7 which we think will start beta testing in a few weeks.

What’s slightly annoying is how to stop this warning from appearing. The method is documented on the wiki but in short you’ll need to reflash the AP firmware. So for example you could update the vehicle to run 4.6.3.