In case of flight disorder or sideward flight, restore factory default settings will be help to restore the default gyroscope settings.
Resetting and calibrating the Syma X5C in four steps:
Step 1: Press the power switch to turn on the transmitter;
Step 2: Press the power switch to turn on the Syma X5C;
Step 3: When the aircraft indicator quickly flashing to slowly flashing, please push the throttle lever to the highest position, and then pull it back to the lowest position.
Then the quadcopter indicator changed from slowly flashing to normal lights up.
Step 4: Place the aircraft on a horizontal postion, then push transmitter both left and right lever to lowest right conner for about 2-3 second, indicator on the Syma X5c changed from normal lights up to quickly flashing; After 2-5 seconds, the indicator changed to normal lights, it means the quadcopter restarted /reset successfully.
When syncing your Syma X5c keep it in a horizontal position to start to a horizontal stable flight.