How do i reset the service light on a bhm (voyager) v4 ceiling hoist?

To turn off the service light that is flashing red on your V4 BHM ceiling lift, you have to proceed this way:
1- Power off the lift with the red cord
2- On the hand controller, push on the PROG + RETURN button at the same time and maintaint it
3- Power on the lift
4- Keep pushing on both buttons, and push in order: UP, DOWN, LEFT, RIGHT.
5-The green light will flash and the buzzer will beep 5 times
6- Release all buttons on the hand controller.
7-Push on the UP button many times, till your hear 4 beeps
8-Push the PROG button once.
9-Push on the LEFT button many times, till your hear 3 beeps
10- Push the PROG button once.
11-Power off the lift with the red cord, then back on.
The service light should be off.