: 21265 is Build 21265 of software version 3.4.
: "l4 l15t4" is a stylized way of writing "la lista" (the list), likely referring to the .lst (list) files used by the Sync system to identify which software packages to install from a USB drive.
: You plug the USB into the vehicle's port. The system uses the "list" file to begin the automated installation.
: 21265 is Build 21265 of software version 3.4.
: "l4 l15t4" is a stylized way of writing "la lista" (the list), likely referring to the .lst (list) files used by the Sync system to identify which software packages to install from a USB drive. 21265 l4 l15t4.rar
: You plug the USB into the vehicle's port. The system uses the "list" file to begin the automated installation. : 21265 is Build 21265 of software version 3