According to the Ford website there is an update for the Sync in my 2011. I downloaded as instructed and unzipped it to my thumb drive. Made sure it was formatted to FAT32 as instructed. Connected the drive to my Sync and started the truck but the update doesn't start. I noticed that in the update file there was a file folder with zipped files inside so I unzipped them inside the folder. some of them when I unzipped it said file name already exist. I tried 2 different methods, skip and unzip and rename but still not updating when I plug in the system. Any ideas what I'm doing wrong.