I've bought a used Roko 2 with version 4.8, build 1178. Can this version be modded?

If I need to connect it to internet to mod , then if someone could please let me know the Roku service's IP or URL. I can block Roku's access to that site, so that the Roku fails to auto-update.
Hope that makes sense.

I am new to Roku. So any/all details would be very helpful.
Thank you.
Here is a screenshot...
http://i253.photobucket.com/albums/hh46 ... /Roku2.jpg