Hi help need for a ford Ls rns code'

[Chinn]

Hi all

i need help if possible I have 2010 focus with the sat nav fitted, I changed the battery but code has gone the system is

LS RNS
s
S/N C7E3A054699204085

other numbers 8M5T 18K931GD

if anyone could help I would be very greatful Many Thanks in advance

[ACDC]

You might get more help in the appropriate forum section

http://www.digital-kaos.co.uk/forums/forumdisplay.php/176-Radio-Decode