"DLC.Boot.2013.v1.0.isol" appears to be a file related to a software or operating system image, specifically designed for booting or installation purposes. The ".iso" extension typically denotes an ISO image file, which is a type of archive file used to store data, often for the purpose of creating an exact copy of a physical medium, such as a CD, DVD, or Blu-ray disc.
Taken together, the name implies an ISO-like bootable image from 2013 related to DLC unlocking . However, legitimate software vendors do not distribute files with such vague, game-hacking-oriented naming. DLC.Boot.2013.v1.0.isol