When you build your update in wyBuild, wyBuild detects the changes and makes the patch. wyUpdate then downloads and installs that patch.
Is this what you wanted to know, or have I misunderstood you?
modifies a file
sguelfandwhat happens if I modify a file and upload version 0.1 to version 0.2, when I update the aplication, this detects the modification and change the file?
sguelfandI upload a file for testing, then modify its contents and upload again when I update and download the file, it does not change
Did you check out our video tutorial by any chance? It gives you a nice walkthrough of what you need to know to successfully release an update.
Tell me if this helps.