navi lock out q

i know you can buy products that unlock the navi while driving, but i was wondering if the dealer can unlock the navigation permenently without any added products that will mess w/ anything; like gps accuracy or have to turn the product off when not in use, etc....

from what i read the lockout is a software-sided security toyota added, so i was think since toyota added the security maybe they can remove it.

my uncle used to work at a toyota dealership, so he knows the mechanics and salesmen there. i didnt ask him yet because i wanted to know if its even possible first before i ask him.

thank you
RUD