Tried this before but got no responses. I’m looking for the date and part number of the most recent Nav map updates. Could someone with a recent 2019 check it out for me? Just go to the Nav screen and tap the “options” tab at the top. Then tap “map data.” It will show the map version and date. Then pop the cover off of the lower right hand corner of the head unit marked “micro SD.” Push on the SD and it will pop out. What are the part numbers listed on the back? After you check, just pop the SD card back in and replace the cover and you are good to go. Thanks in advance.