PES3013 manages three separate databases in DLC5.0, one for Libertadores teams, other for Libertadores update and other for the rest of teams.
A way to play the Libertadores teams (and update) in exhibition mode is to merge the databases, and then adding the Libertadores teams to a league, for example in "OTHER".
To apply the patch download and replace the files in dt0f.img. Tested on PES2013 1.04 DLC5.0. (can be applied with kitserver or directly in the file dt0f.img)