Thank you for your message and your interest in our models. Our most recent 
available model files can be downloaded from:

http://www.bruzual.org/bc2003_models/

or

http://www.bruzual.org/bc03/

The models in the Updated_version_2012/ subdirectory are identical
to the models in the original_version_2003/ except that the accompanying
*.color files have been updated to include more filters and more model
properties are listed.

In this directory you will also find a new version of the /src directory
of our official 2003 software release, in the file src.tgz, which includes
several improvements and bug fixes relative to the initial version.

With best wishes,

Stephane & Gustavo