Ok, Thanks I just need to understand what I will do.
1. Go to the update file page_portfolio.php then I copy the code and paste in my own child theme page_portfolio.php file.
2. Go to the function.php file and look for the code related with pretty photo that I suppose it starts here until the end of the file/** Add Portfolio Settings box to Genesis Theme Settings */
3. Then Update the code above with with function.php file update from the new version of the theme.
Is that right?