How to copy updates from mac to another? I live in a country where Internet isn't that broadbandish, I installed Lion on my home laptop and want to copy the updates to my Mac Mini.

Is there a way to copy Apple updates from a machine to another?
You could, but not by using Software Update.

What you should do, is wait for Apple to release the update on its website, here is the 10.7.1 update, store it on a USB drive and install it wherever you want.