Go to inc/functions.php, at line 5584 you'll find "fetch_remote_file".
Write it in the section "if(function_exists("curl_init")) ".
Code:
<?php
curl_setopt($ch, CURLOPT_PROXY, "127.0.0.1");
curl_setopt($ch, CURLOPT_PROXYPORT, "8080");
curl_setopt($ch, CURLOPT_PROXYTYPE, CURLPROXY_SOCKS5);