My first post and its hopefully easy to answer but for some reason i think not .

So i have a Kenwood dnx-6990hd head unit i would like to install the latest maps available for it that have been unlocked. what is required sd card foramt, files, and folders. what are the steps necessary for this unit to update my maps correctly

Im sure there are some very knowledgeable people on this forum that have the knowledge in this matter.

ive been unsuccessful thus far and need some assistance

Thank you