Hello,
After a very light crash I replaced a propellor. Then I have an ESC error, unable to start.
Several restart and a refresh of the firmware didn’t resolve the issue.
I’m happy to disassemble the aircraft and do some testing. Or should I return it?
BRGRDS Roland van Helden.

Hi there, we are sorry to know about the crash. We recommend that you start a case through the link below and send the drone in for diagnosis first. If there is a doubt about the accident, data analysis can also be applied as long as the drone is within the warranty period. http://www.dji.com/support