Mavic Pro - IMU Calibration stuck & Error 0x02030503
Hi everyone, I need some technical advice with a Mavic Pro repair.
Originally, the drone had a "Compass 2" error (999 interference, static). After testing, I confirmed the Front Compass module and cables were fine (they worked on a donor drone). This led me to swap the Core Board from a donor Mavic Pro.
The Current Problem:
1. After the board swap, the IMU won't calibrate.
2. I tried updating/resetting via mobile, but it fails at 60% with error code 0x02030503.
3. My PC recognizes the drone in Device Manager as , but DJI Assistant 2 (v1.2.5) does not show the drone icon.
What I've tried:
· Verified continuity in compass cables.
· Swapped Front Compass module.
· Tried different USB ports and cables.
· Reinstalled DJI Assistant 2 (v1.2.5).
Has anyone faced this specific error code during? How can I force DJI Assistant 2 to recognize the drone when the COM port is active but the app is blind?
Posted Feb 7, 2026, 11:06 PM UTC