Problem: I failed to update the xhorse vvdi bimtool pro firmware to v1.8.4 via upgrade kit. It failed to proceed and reported error code 400: update failed. Any clues? Solution: Change stable network connection or another laptop If still failed, you may need to send back hardware for repair (VVDI BIMTool unit only).
Xhorse VVDI BIM Tool Pro software and hardware technical support from vvdishop.com.