You can't, or at least not by "restoring" past history.
The only way to update your IP address on OpenDNS is from a device that's currently using that public IP address. That could be a computer, laptop, tablet, router, or many other devices. You'll either have to do it when you get home, or use some other device on the network to update it to whatever your current address is.
The real problem is that you shouldn't have the Updater installed on a mobile device and automatically updating from it. When you connect to another network not only will you lose all protection for your home network, you are effectively trying to claim someone else's network as your own. At a minimum you need to disable automatic updating on your laptop, if not doing your updates from a different device such as a desktop computer or a router.
