the brake option is never used on a heli as the power generated for stopping the motor will cause the teeth to be ripped off the main gear from the inertia of the rotor blades.
Why is it an option? only thing I can think of is for a plane,as the prop is turning the same speed as the bell sometimes as much as 10,000 rpm +.
you should be able to program the esc by placing the throttle stick at full than plugging in the batt to the heli(no need at all since it's correct already) as the esc gets plugged straight into the rx section and the safety features are in the esc section of the 4in1