After I had a crash from a runaway situation, I had several people asking me for details on how to do a few things to get back up and running and make sure the Spark is in its best form.

IMU Calibration:


Compass Calibration:


Change propellers:

Thanks for sharing your videos.  

I think it would be nice to add, that compass calibration is not necessary everytime you fly. It is only needed when you significantly change locations ( long distance 50 miles or so)  or the Go 4 App tells you there is a problem.

You can introduce more problems by doing the compass calibration willy-nilly;  
1) Make sure you are not near any metal or have keys or phone near the Spark
2) Start the spin facing north so you are calibrating the correct direction.
3) Use 2 hands and pay attention to the process
4) Don't get in a hurry, and keep the drone level / vertical during the spin.

Rich

Thanks for these amazing videos .. keep them coming.  Look forward to your next one.

Cool, Thanks for sharing!