One more question: for example, there is one navi unit MK3 (i think in MK4 is the same). As a default it has Fr and Eng languages.... I'm making the customisation by changing this set of languages to Us and Ger..... and then next time when new navi SW would be released (or updating from 3-1/62 to 3-1/63) this custom set of langueages will stay or I should again fix this by NavCoder (or other soft)?