lost navigation

[Deezel123]

Hi after recently buying a vcds i went to try a mod i'd seen on a forum to enable hidden green menu etc 

5f information elec select channel 6 and read change value from 0 to 1 then test then save 

Didn't work , no way to get the hidden menu by pressing car and menu at the same time 

then found out i'd lost my sat navigation so I reset vcds to what it was before , and still no navigation !! did factory reset in MMI no change still no sat nav 

Anyone any ideas how to get it back ? 

Thanks regards John