Installing Used Navigation Systemridgeline Is Is Possible To Use A Navigation System At Oversea. I Am Trying To Bring My Car Which Has A Navigation?

Is is possible to use a navigation system at oversea. I am trying to bring my car which has a navigation? - installing used navigation systemridgeline

Toyota RAV4 that I integrated navigation system. However, I have just received a contract to go to Korea. I bring my car to the DPRK, but wonder whether the navigation system can still be used or can not install any new software or DVD.