1- PRESS SAME TIME SHIFT BUTTON AND  FUNCTION BUTTON. ( HOLD SHIFT AND PRESS FUNCTION )

2- ENTER USER  AND CHOOSE VERSION.

2- HERE WE NOTE THE FIRST 4 DIGITS OF THE CU1 VERSION. WE WILL CONSIDER THE FIRST 4 DIGITS OF THE NUMBER IN THE SECOND CLUSTER. ( EXAMPLE: CU1 89732 456700 )

3- GO BACK TO THE MAIN SCREEN,  PRESS HOLD  SHIFT BUTTON AND PRESS FUNCTION BUTTON . WRITE THE CU1 VERSION NUMBERS WE HAVE NOTED BY INCREASING THEM BY 1. ( EXAMPLE: CU1 89732 456700 IF WE ASSUME THE CU1 VERSION NUMBER IS 4567, WE WILL ADD IT WITH 1111. IN THIS CASE THE SECRET CODE WE WILL USE WILL BE 5678 )

4- WE WILL RETURN TO THE MAIN SCREEN BY PRESSING THE TEL/DSC BUTTON.

AGAIN PRESS SAME TIME SHIFT BUTTON AND  FUNCTION BUTTON. ( HOLD SHIFT AND PRESS FUNCTION ) ENTER DSC AND ENTER MMSI TWICE TIME.

THEN THE FIRST DIGIT OF THE MMSI WILL FLASH. AFTER ENTERING THE CORRECT MMSI NUMBER, PRESS THE ACCEPT BUTTON.

TO CHECK IF THE MMSI NUMBER IS REGISTERED, YOU CAN FOLLOW SHIFT > FUNCTION > DSC > MMSI.