Update Windows No Internet Connection

http://download.wsusoffline.net/

It's German but don't sweat it.

Just run the .exe and select the product you wish to update.

Simply check the settings you want. You may not want an iso.

The update files appear in "client" folder. If you also/or choose "iso" that will be in iso folder. I have not used iso so don't know how you use the iso updater after it is created. Perhaps it is a self boot?

Or you could try this update pack. Says can be integrated into win install.
http://forums.mydigitallife.info/threads/45005-Simplix-Pack-to-update-Live-Win7-System-Integrate-hotfixes-into-Win7-distribution