BBF I have downloaded the sync 3 update opened it with unarchiver moved files to the usb the folder had 6 files I have a 2016 lincoln MKX with 3.0 version, plugged in the usb got message to update hit yes and got an LST ERR05 message said download files again and retry I did but get same message, am I missing a step here.
Hi milcol. Not sure what the issue is. However, I have seen some owners complain of issues with downloading and unzipping via Mac.
So my recommendation would be to use a PC, and try following the instructions for downloading and unzipping the files using a PC instead of your Mac. It has worked for others.
Let us know how you make out and good luck.