Making an Update with NSIS

Hi!

I make a program that I have installed on user computer with NSIS. Now, an update is available and I wish to send the update to all my users.

The problem is : I have multiple huge files that have change slitly. Do I have to replace intierly those files or it's possible for me to replace only the data that have change in each files?

You should use VPatch. It's available in the latest CVS version or in the Archive.

Thanks a lot kichik, I will try it right now!!!