Thanks for the work done here, I have a 3590 unit, and I have read through the posts, I believe this is a newer model and will need FID to be 800, and in this case it is already. So according to the instructions, I will need to use JM to create the unl file with FID800 and PID1,0,0. Then I copy the img and unl file to garmin folder of my unit and also the garmin folder in my SD card (I even tried .system folder). but I can not see the cityxplorer info in my installed map list. Anything I did wrong ? please kindly help