Those are the correct APN settings for Tmobile so that should not be an issue.
Are you able to connect to a publicly accessible ftp site like ftp.microsoft.com using Idokorro Mobile FTP?
You can just use an Anonymous login type.
If you can connect to ftp.microsoft.com then it is likely that either a firewall or router is blocking the connection to your home FTP server.
Here is a good resource on configuring many different types of routers to allow a FTP connection: http://www.portforward.com/english/a...P/FTPindex.htm
If you need any additional information I encourage you to contact Idokorro directly at