Try this....
this is the address Sentinel uses to update the database and the firmware:
ftp://ftp.homepatrol.com
Click on that link (or copy and paste it to your browser's address bar) and see if you get a screen that is asking you to login to the server. You won't be able to login, Sentinel handles that internally.
If you don't see the login window, your ISP is most likely blocking FTP transfers.
If you do see a login screen, that means you can reach the server, but your ISP has too much latency time in their FTP transfers causing Sentinel to time out.
In either case, you need to contact your ISP to have them remedy the problem, or take a laptop and your scanner to somewhere with public WiFi.
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