Quoting Battlestar_Freedom,
is there any way to download an update through Impulse on one PC and transfer it to another, because i dont have an internet connection on the computer i play SINS on
and im getting behind my mates who have it, so now i cant do LAN games cos they have the updatede version
Just to clarify: you can connect for a LAN game, but you can't get Impulse to connect to its server after having already purchased Entrenchment ... via Impulse?
And no, there isn't an alternative source for the update.
I don't know whether your idea would work or not, but I suggest you reach someone in tech support regarding your Impulse connection issue. That would be much more straight forward.